HELP ME ASAP BRAINLEST
what are Cilia And Flagella and please explain ?
Answers
Answer:
your answer is in above pic
hope it helps
Answer:
Cilia and flagella are tube-like appendages which allow for motion in eukaryotic cells. If a cell has a single appendage, which often looks tail-like, it is called a flagellum, but if it has many, they are called cilia. The motion of the cilia or flagellum moves the liquid outside the cell and if the cell is not anchored, it can "swim." A commonly recognized example is the "tail" on a sperm cell, which is actually a flagellum.
Cilia: The fine hairlike projections from certain cells such as those in the respiratory tract that sweep in unison and help to sweep away fluids and particles. Some single-celled organisms use the rhythmical motion of cilia for locomotion.
Cilia: The fine hairlike projections from certain cells such as those in the respiratory tract that sweep in unison and help to sweep away fluids and particles. Some single-celled organisms use the rhythmical motion of cilia for locomotion.Cilia is the plural of cilium, a Latin word referring to the edge of the eyelid and, much later, to the eyelashes. Cilia came to be known fine hairlike projections from cells.
Flagellumal flagella, hairlike structure that acts primarily as an organelle of locomotion in the cells of many living organisms. Flagella, characteristic of the protozoan group Mastigophora, also occur on the gametes of algae, fungi, mosses, slime molds, and animals. Flagellar motion causes water currents necessary for respiration and circulation in sponges and coelenterates. Most motile bacteria move by means of flagella.
Related Questions
HELP NEEDED any help is good
Answers
Although hummingbirds and house flies both use wings to fly, this similarity is not based upon closely shared ancestry but rather on evolution and adaptation as a result of survival and reproduction in a given environment. The term best describing such a phenomenon is
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Answer:
Analogous Structures
Explanation:
Defintion of Analogous Structures: body parts that share a common function, not structure. I wish there was multiple choice but hopefully this helps.
currently, the most widely used potent teratogen is prescribed ___________.
Answers
Currently, the most widely used potent teratogen is prescribed Thalidomide.
Thalidomide is a medication that was prescribed in the late 1950s and early 1960s as a sedative and anti-nausea drug. However, it was later discovered to be a potent teratogen, meaning it causes severe birth defects when taken during pregnancy. The use of Thalidomide during pregnancy led to a significant increase in cases of limb malformations and other developmental abnormalities in newborns. Despite its devastating effects, Thalidomide is still used today, but under strict regulations and with rigorous monitoring to prevent its administration to pregnant women.
In summary, Thalidomide is currently recognized as the most widely used potent teratogen, as it has been associated with severe birth defects when taken during pregnancy. Strict guidelines and precautions are in place to ensure its safe use and prevent its administration to pregnant women.
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A diagram illustrates that grass is eaten by insects, birds, and mice. The insects are eaten by hawks, snakes, and toads. The birds and mice are eaten by foxes, hawks, and snakes. The toad is also eaten by the snake. Which best describes the diagram?
pyramid
food chain grid
food web
trophic level
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Answer:
Food web
Explanation:
food web:
a system of interlocking and interdependent food chains.
Answer:
food web
Explanation:
food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains.
When is the lac operon most active?
A. When glucose levels are high and lactose is present
B. When glucose levels are low and lactose is absent
C. When glucose levels are low and lactose is present
D. When glucose levels are high and lactose is absent
Answers
Answer: The correct answer to the question is option WHEN GLUCOSE LEVELS ARE LOW AND LACTOSE IS PRESENT.
Explanation: To start with,Lac operon can be simply defined as a part of the DNA that is under the part of the DNA is manipulated and controlled by the same promoter,they can be found in some prokaryotic cells giving room for regulation over excess synthesis of protein.so simply put,these specific segment of the DNA binds with the segment of the polymerase of RNA so that transcription of the mRNA from the operon genes will be achieved.
Lac operon is also known as lactose operon, it is seen in some enteric bacteria like e.coli where they play a crucial role in coding of genes for those proteins that function in moving lactose into the cystocel and digesting it to form glucose that is used for energy generation. These lac operon are are most active when glucose levels are low and lactose is present,with the low level of glucose, the lac operon can be transcribed to a high level,this is to ascertain that the bacteria only gets to activate the lac operon and can only make use of it,that is using lactose when all the preferred energy source from glucose has been exhausted.
Answer:
c.
Explanation:
18 Which characteristic below is NOT used to separate molecules during gel electrophoresis?
(1) boiling point
(2) charge
(3) shape
(4) size
Answers
Answer: (1) boiling point.
Explanation: Gel electrophoresis is a technique used to separate DNA fragments (or other macromolecules, such as RNA and proteins) based on their size and charge. Electrophoresis involves running a current through a gel containing the molecules of interest. The molecules will move faster or slower based on their size and electric charge. Smaller molecules move faster and migrate farther than larger ones because they can pass through the pores of the gel more easily. This phenomenon is called sieving. Similarly, molecules with a higher charge will move faster and migrate farther than molecules with a lower charge because they are more attracted to the opposite electrode.
Boiling point is not a characteristic that affects the separation of molecules during gel electrophoresis because it is not related to the size or charge of the molecules. Boiling point is the temperature at which a liquid becomes a gas, which depends on factors such as intermolecular forces, pressure, and molecular weight. Boiling point does not affect how fast or far a molecule moves in an electric field. Therefore, it is not used to separate molecules during gel electrophoresis.
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What are the answers to these?
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During translation, the sequence of 3 bases on mRNA, otherwise known as codons, are translated into their respective amino acids and linked by peptide bonds to form the primary structure of proteins.
The tRNA carries the anticodon and the amino acids that correspond to each codon on the mRNA. As soon as the anticodon on a particular tRNA matches the codon on the mRNA, the amino acid is dropped and the next codon on the mRNA is read. This cycle continues until the stop codon is reached.
Successive amino acids are linked together by peptide bonds to form proteins.
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Select all that apply.
Cells function together to form tissues. The four main types of tissues in animals are _____.
epithelial
blood
connective
muscular
nervous
bone
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Connective
Muscular
Nervous
Cells in animals function together to form tissues. The four main types of tissues in animals are epithelial, connective, muscular, and nervous. The correct options are 1,3,4, and 5.
In animals, cells come together to form tissues, which are groups of cells that work together to perform specific functions. There are four main types of tissues in animals:
Epithelial Tissue: Epithelial tissue lines internal organs and is similar to the skin that covers the outside of the body. Connective tissue: It binds and stabilises the various bodily components. It consists of organs and tissues like cartilage, tendons, and ligaments.Muscular Tissue: Movement in the body is made possible by muscular tissue. Muscle tissues come in three different varieties: cardiac muscles, smooth muscles, and skeletal muscles.Nervous Tissue: The body's ability to communicate depends on its nervous system. It is made up of neurons that send electrical impulses, enabling us to detect and react to our surroundings.Thus, the correct options are 1,3,4, and 5.
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If the allele for an attached earlobe (e) is recessive to the allele for an unattached earlobe (E), what will be the relative frequency of e in a population?
a. It could be more or less frequent than T.
b. It could only be equally as frequent as T.
c. It could only be more frequent that E.
d. It could only be less frequent than T.
Answers
Answer:
It could be more or less frequent than T.
Explanation:
As demonstrated by the Hardy-Weinberg principle, the dominance or recessiveness of an allele does not determine its frequency in a population.
In the given scenario, the relative frequency of e in a population will be It could be more or less frequent than T. The correct option is a.
What is allele?An allele is one of two or more DNA sequence versions at a given genomic location. For any given genomic location where such variation exists, an individual inherits two alleles, one from each parent.
The Hardy-Weinberg principle demonstrates that an allele's dominance or recessiveness does not determine its frequency in a population.
Thus, the correct option is a.
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Which macromolecule plays a central role as an energy source?
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Answer:
Carbohydrates
Explanation:
Ex: Glucose (monosaccharide)
5.) Look at the figure to the left and read the caption. Based on this, how can the mitotic index of a sample be used to predict survivability for mast cell cancer?
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A higher mitotic index in a mast cell cancer sample would suggest a greater likelihood of the cancer spreading and a lower chance of survival.
What is the mitotic index?The mitotic index is a measure of the rate at which cells in a sample are dividing. In the case of mast cell cancer, a high mitotic index indicates that the cancer cells are dividing rapidly, which can be an indicator of more aggressive disease and poorer prognosis.
Therefore, a higher mitotic index in a mast cell cancer sample would suggest a greater likelihood of the cancer spreading and a lower chance of survival. Conversely, a lower mitotic index in a sample may indicate a slower rate of cancer cell division, which could suggest a more favorable prognosis with better chances of survival.
However, it's important to note that the mitotic index is just one factor that is considered when predicting the survivability of mast cell cancer, and other factors such as the tumor size, grade, and location must also be taken into account.
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Will give brainliest if you give the correct answer!
What similarities and differences do you see between the organisms in image 1?
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Answer:
The similarities I see is that all organisms are standing on two feet, they have the same stance, and all have two feet and two arms.
The difference I see is the shape of the skull and the height.
Explanation:
I hope I have helped
Which organ is least likely to be damaged in an automobile accident.
Answers
Answer:
The Urinary Bladder.
Explanation: The correct option is the Urinary bladder that is least damaged in an automobile accident because it's protected in the pelvic cavity in the 2 hip bones.
Automobile accident-
Whether someone suffers an impact injury or a penetrating injury, the organs that are most frequently damaged in car crashes include Spleen.
The spleen is a commonly injured organ due to its position in the abdomen—under the left rib cage near the stomach.
Thus, the chances of the least damaged organ in an automobile accident is the Urinary bladder,
Answer:
In an automobile accident there is so much damage to the body but the least damage to the Urinary bladder.
The correct option is the Urinary bladder that is least damaged in an automobile accident because it's protected in the pelvic cavity in the 2 hip bones.
Automobile accident-
Whether someone suffers an impact injury or a penetrating injury, the organs that are most frequently damaged in car crashes include Spleen.
The spleen is a commonly injured organ due to its position in the abdomen—under the left rib cage near the stomach.
Thus, the chances of the least damaged organ in an automobile accident is the Urinary bladder option C, protected by a pelvic cavity.
Explanation:
Help!!! Write 2-3 sentences explaining the scene of a rainforest.
WILL GIVE BRAINLIEST
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Answer:
Rainforests are the Earth's oldest living ecosystems.
They are so amazing and beautiful.
These incredible places cover only 6 %of the Earth's surface but yet they contain MORE THAN 1/2 of the world's plant and animal species!
A Rainforest can be described as a tall, dense jungle. The reason it is called a "rain" forest is because of the high amount of rainfall it gets per year. The climate of a rain forest is very hot and humid so the animals and plants that exist there must learn to adapt to this climate.
Rainforests basically have four layers to them.
Table divider
Monkeys are skillful climbers who leap and scamble among the branches
As many as 30 million species of plants and animals live in tropical rainforests.
At least two-thirds of the world's plant species, including many exotic and beautiful flowers grow in the rainforests.
This pink plant grows on rainforest trees - it is an epiphytic air plant which means it grows on the tree but is not a parasite.
Table divider
Rainforests are the source of many items that we all use in our own homes!
We eat several foods from the rainforest and many medicines are made from ingredients found only in these areas.
Sap that is used to create rubber from a Rainforest tree
Some of the common products we know of include:
chocolate
sugar
cinnamon
rubber
medicine
pineapples
Explanation:
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~In a rainforest you'll see tall trees everywhere.
~You'll get to see different species of animals.
~There might be some indigenous people in groups like “Yanomamo and Kayapo” in the Amazon Rainforest.
___________________________\( \tt \green{~ ʜᴀᴘᴘʏ \: \: ʟᴇᴀʀɴɪɴɢ ~ }\)
Develop a project plan, clearly indicating the project scope, deliverables, flow of deliverables, project. activities, Work Break Structure (WBS), the schedule, quality criteria, and expected risks. (50Marks) Project: Conference - You are required to organize and run a conference for 100 delegates. - The date and subject matter are set. - The focus of the conference is to bring members of Project Management profession up to date on recent procedures and standards and to developments in professional allow for networking between fellow members. Task 2 A farmer has been allocated 100 hectares of an arable land in Otavi. The farmer is not sure whether to grow vegetables or to produce livestock feed on the plot. He then approaches you for advice as to which option will maximize his benefits from an efficiency point of view. Prepare a detailed Project plan for each of the two options. (50Marks) 2. Use the Cost-Benefit Analysis Method to compare which option will bring more economic benefits. 3. What other factors would you consider in making final recommendations? 4. Use Chapters in the prescribed textbook and any other resources to guide you in the assignment. NB: Students are expected to have read Chapters in the prescribed textbook and apply the Cost-Benefit analysis method to the given project.
Answers
1. Organize and run a conference for 100 delegates in order to update project management professionals on recent procedures and standards and facilitate networking opportunities. 2. Successful execution of the conference, updated procedures and standards material, networking opportunities. 3. Pre-conference planning, venue setup, registration, keynote speeches, breakout sessions, networking activities, post-conference evaluation. 4. Project Activities: Venue selection, budgeting, speaker invitations, program development, marketing and promotion, logistics management, registration process, on-site coordination.
Task 1: Organizing a Conference
1. Project Scope:
Organize and run a conference for 100 delegates.Date and subject matter are already set.Focus on updating project management professionals on recent procedures, standards, and developments in the profession.Provide networking opportunities for conference attendees.2. Deliverables:
Successfully organized conference event.Well-informed and engaged conference attendees.Networking opportunities for project management professionals.3. Flow of Deliverables:
Pre-conference planning and preparationConference event executionPost-conference follow-up and evaluation4. Project Activities:
Venue selection and bookingDeveloping a conference program/agendaIdentifying and inviting relevant speakers/presentersManaging registrations and attendee communicationsOrganizing logistics (catering, audiovisual equipment, signage, etc.)Coordinating networking activitiesConducting post-conference evaluation and feedback collection5. Work Breakdown Structure (WBS):
Each project activity should be broken down into smaller, manageable tasks to create a comprehensive WBS.6. Schedule:
Create a timeline outlining the start and end dates of each project activity, including dependencies and milestones.7. Quality Criteria:
Define specific quality standards for each deliverable, such as the professionalism of speakers, attendee satisfaction, smooth event logistics, and effective networking opportunities.8. Expected Risks:
Identify potential risks and develop a risk management plan, including strategies to mitigate, transfer, or accept risks associated with the conference. Risks could include budget overruns, speaker cancellations, technical failures, or low attendance.Task 2: Farmer's Land Allocation
1. Project Options:
Option 1: Growing vegetables on the plot.Option 2: Producing livestock feed on the plot.2. Cost-Benefit Analysis:
Conduct a cost-benefit analysis for each option to compare the economic benefits.Identify and quantify costs associated with each option (e.g., land preparation, seeds, equipment, labor, maintenance).Identify and quantify benefits (e.g., crop yield, market prices, potential profits, savings on feed costs).3. Other Factors for Consideration:
Environmental factors (water availability, soil suitability)Market demand for vegetables and livestock feedFarmer's expertise and resourcesPotential risks and challenges specific to each option (e.g., pests, diseases, market fluctuations)To learn more about project plan, here
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are the major lipids of plasma membranes. - a. Triglycerides - b. Phospholipids - c. Fatty acids - d. Steroids
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The major lipids of plasma membranes. are called b. Phospholipids, which form a bilayer in the cell membrane.
What is the phospholipid bilayer in the cell membrane?
The phospholipid bilayer in the cell membrane is an arrangement of phospholipids in order to form biological barriers that allow the selective movement of substances across the internal medium of the cell and the surrounding environment.
A phospholipid is composed of a phosphate polar head and fatty acids that are located on the internal side of the cell membrane because it is hydrophobic (polar phosphate heads are in contact with surrounding water which stabilizes the cell membrane).
Therefore, with this data, we can see that the phospholipid bilayer in the cell membrane is arranged in the sense that the phosphate heads of these biomolecules are located on the outside and fatty acids inside.
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measurements in a nephron reveal a glomerular hydrostatic pressure of 69 mm hg, and a fluid pressure in the bowman's capsule of 15 mm hg. assuming that the plasma colloid osmotic pressure is 30 mm hg, and that essentially no plasma proteins are filtered by the glomerulus, what is the net glomerular filtration pressure in this case?
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The net glomerular filtration pressure is the force that drives the movement of fluid and solutes from the glomerulus into the Bowman's capsule of a nephron.
It is determined by the balance between the hydrostatic pressure and the colloid osmotic pressure of the blood and the pressure in Bowman's capsule. In this case, the glomerular hydrostatic pressure is 69 mmHg, which is the force generated by the heart to push blood through the glomerulus. The fluid pressure in Bowman's capsule is 15 mmHg, which opposes the flow of fluid from the glomerulus. The plasma colloid osmotic pressure is 30 mmHg, which is the force generated by the proteins in the blood to keep fluid from leaving the capillaries.
To calculate the net glomerular filtration pressure, we subtract the fluid pressure in Bowman's capsule and the plasma colloid osmotic pressure from the glomerular hydrostatic pressure. Thus, the net glomerular filtration pressure in this case is 69 mmHg - (15 mmHg + 30 mmHg) = 24 mmHg. This means that the pressure gradient that drives the movement of fluid and solutes into Bowman's capsule is 24 mmHg, which is sufficient to filter out waste products and excess fluid from the blood to form urine.
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5. Name 3 things bacteria are "notorious" for?
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Answer:
While pathogenic bacteria are notorious for such diseases as cholera, tuberculosis, and gonorrhea, such disease-causing species are a comparatively tiny fraction of the bacteria as a whole. Bacteria are so widespread that it is possible only to make the most general statements about their life history and ecology.
Explanation:
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orchiopexy: a.prolapse of a testicle b.removal of a testicle c.incision and removal of a piece of the vas deferens d.fixation of an undescended testicle e.removal of the prepuce
Answers
Orchiopexy refers to the fixation of an undescended testicle, surgically bringing it into the scrotum and securing it in place.
Orchiopexy is a surgical procedure performed to correct an undescended testicle, a condition where one or both testicles fail to move down into the scrotum as they should during fetal development. The main objective of orchiopexy is to bring the undescended testicle into the scrotum and secure it in its proper position.
During the procedure, the surgeon makes an incision in the groin or scrotum, depending on the location of the undescended testicle. The testicle is carefully located, freed from any attachments, and then brought down into the scrotum. It is fixed in place using sutures or other techniques to ensure it remains in its correct position.
Orchiopexy is important to correct an undescended testicle because leaving the testicle in the abdomen or inguinal canal can lead to potential complications, including infertility, testicular cancer, and an increased risk of testicular torsion. The procedure aims to improve fertility potential and reduce the risk of long-term complications associated with an undescended testicle.
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When referring to mitosis where do the Chromosomes from during metaphase
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Answer:
During metaphase, the cell's chromosomes align themselves in the middle of the cell through a type of cellular "tug of war." The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids.
the term _____ means to bend a limb at the joint.
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The term "flexion" means to bend a limb at the joint. Flexion is an essential movement in our daily lives, allowing us to perform various tasks and activities.
This movement occurs when the muscles surrounding the joint contract, causing the joint to move and the limb to bend. Flexion is an important movement in many daily activities, such as reaching for objects, walking, and sitting. It is also necessary for exercises like bicep curls, leg curls, and sit-ups. The opposite of flexion is extension, where the limb is straightened at the joint. Both flexion and extension are important for maintaining joint health and range of motion.
In this process, the angle between the bones connected by the joint decreases, resulting in the bending of the limb.
This action can be observed in multiple joints throughout the body, such as the elbow, knee, and fingers. Flexion is crucial for the overall functionality and mobility of the human body, enabling us to maintain a wide range of motion and adapt to different physical demands.
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Your brain uses the _____ to process and manage stress responses.
Answers
Answer:fruntalope
Explanation:
Explain how both nucleic acids and proteins are polymers. be sure to describe the monomers that make up the polymers.
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Answer:
Both nucleic acids and proteins are made of the repeating monomer units, which is why they are considered polymers. Nucleic acids are made of nucleotides, which consist of a phosphate, a 5-carbon sugar, and a nitrogenous base. Proteins are composed of amino acids.
Explanation:
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Biology B (CR) (ACC. Ed)(Dixon) / Principles of Evolution
3. How many total, non-unique alleles are there for each gene in a population of 250 humans?
A 125
B 1000
C 500
D 250
Answers
Answer:
C. 500
Explanation:
Each human has 2 alleles, which you do 250*2, getting 500
What caused the tree bark to become darker?
Answers
Answer:
i would think pollution
Explanation:
cuz it might color the tree darker
Explain one problem that non-indigenous carp might cause for other organisms if the carp escaped from the ponds into nearby rivers.
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state two important changes that chromosoms must undergo before cell divsion can take place
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Before the process of cell division can occur, the chromosomes undergo two crucial changes. The first is the replication of DNA, and the second is the condensation of chromatin into chromosomes.Chromosomes are composed of a condensed version of chromatin.
They are formed when chromatin is compressed into a smaller size by a series of changes to its shape, structure, and packing. Chromosomes are required for cell division because they allow for DNA replication and segregation. The second important change that chromosomes must undergo is DNA replication. DNA replication occurs in preparation for cell division. In this process, the double-stranded DNA molecule unwinds and separates into two complementary strands, each of which serves as a template for the synthesis of a new complementary strand.
DNA replication results in the production of two identical copies of the original DNA molecule. Chromosomes play a critical role in cell division. They undergo two crucial changes, which include the replication of DNA and the condensation of chromatin into chromosomes.
DNA replication is the process of unwinding and separating the double-stranded DNA molecule into two complementary strands. Chromatin is compressed into a smaller size by a series of changes to its shape, structure, and packing, resulting in the formation of chromosomes.
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PLEASE HELP ASAP-THis is science btw! ~Which type of weather do we associate with high pressure systems? (select all that apply)
a
happy weather
b
clear skies
c
sunny days
d
lousy weather
e
rain
f
clouds
Answers
Answer:
a,b,c
Explanation:
A high pressure system is a whirling mass of cool, dry air that generally brings fair weather and light winds. When viwed from above, winds spiral out of a high-pressure center in a clockwise rotation in the Northern Hemisphere. These bring sunny skies.
Sophie visited Carlsbad Caverns with her family during her summer vacation, and she was amazed at the cave’s formations. She learned that the cave was formed from minerals.
Rearrange the phrases describing one of the ways minerals form into the correct order. Place the earliest stage of mineral formation at the top. Place the final stage at the bottom. (Write 1 2 3 or 4 in order)
1. a solution forms from a liquid and dissolved substances
2. a warm solution flows through a crack in the rocks there
3. elements and compounds leave as the solution cools
4. elements and compounds crystallize
BASICALLY SAY WHICH STEPS GO FIRST IN MINERAL FORMATIONS! PLESSS
Answers
Answer:
The ways through which the minerals form include the following order:
2. a warm solution flows through a crack in the rocks there
1. a solution forms from a liquid and dissolved substances
3. elements and compounds leave as the solution cools
4. elements and compounds crystallize
Explanation:
From the explanations above, it could be seen that a warm solution (most probably water) flows through the cracks in the rocks leading to dissolution of substances to form liquid. When the liquid cools, the elements leaves and crystallize as compounds.
which of the lymph node does not contain any lymphatic nodules? a) Inner cortex
b) Outer cortex
c) Medulla
d) Sinuses
e) Trabeculae
Answers
The lymph node that does not contain any lymphatic nodules is the Sinuses. Lymph nodes are usually composed of an outer cortex and an inner medulla.
The outer cortex contains numerous lymphatic nodules and is the primary site of antigen processing and presentation. The inner medulla is composed of small blood vessels and a few scattered lymphocytes. The sinuses are the spaces in between the cortex and medulla, and they do not contain any lymphatic nodules.
The sinuses are filled with lymph, which is a fluid containing white blood cells, proteins, and other substances that help fight infection. The trabeculae are connective tissue that supports the outer cortex, and they also do not contain any lymphatic nodules. All these components together are important for the functioning of the lymphatic system, which is an essential part of the body's defense and immune system.
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