Which is the predatory bird of Arctic tundra?

Answer:

Muscle is a soft tissue found in most animals. ... Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell. Muscles function to produce force and motion.

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Answer:

Muscle is a soft tissue found in most animals. ... Muscle cells contain protein filaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell. Muscles function to produce force and motion.

Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetah.

Limiting factors are those factors in the ecosystem which can limit the growth of population of a species in an ecosystem. Predation and competition are two limiting factors in the ecosystem that can decrease or extinct the population of a species. Predation is a limiting factor in which predatory organisms are dependent upon a prey organisms. This is natures way of limiting the surplus growth of prey population and to maintain a balance in ecological community. Competition is a limiting factor in which one or more same or different type of organisms compete for the same resource in an ecosystem. The one which is more competitive will derive those resources other than the one which is less competitive.

According to the given data, it is evident that the population decline in predator cheetah and lion populations because of decline in zebra population but the decline in cheetah population is more than that of lion. It explains the fact that lion is more competitive than cheetah in deriving the food which is already limited. Therefore, lion outcompete cheetah.

Answer:

Yes, they are very much the main cause of severe storms because the heat molecules get into the atmosphere and clouds, causing chemical reactions and damage. At some point in time, the energy built up, as well as the damage done, must undo itself. This is done through a storm. It is the environment's way of cleaning itself.

As a part from this video below states, wind shear is a leading cause in severe storms.

Answer:

Edge Answer

Explanation:

Two G3P molecules leave the cycle.

The G3P molecules are used to make organic molecules like glucose and sucrose.

Calvin cycle is a process through which atmospheric carbon fixation takes place. In this step, NAPDH is converted to NADP with the formation of glyceraldehyde-3-phosphate. Thus, the correct option is D.

Calvin cycle is a set of light-independent reactions which converts the atmospheric carbon dioxide and hydrogen-carrier compounds into glucose with the formation of ATP and NADP.

Calvin cycle is divided into three phases: Carbon fixation, Reduction, and Regeneration. Carbon fixation includes carboxylation phase in which atmospheric carbon dioxide reacts with the Ribulose-1,5-Bisphosphate in the presence of enzyme Ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO) to form a three-carbon compound, 3-PGA (3-phosphoglyceric acid)  which undergoes a reduction reaction to form glyceraldehyde-3-Phosphate (G-3-P) with the formation of NADPH to NADP.

In the regeneration step of calvin cycle, two molecules of G-3-P in the presence of ATP combines to form Ribulose-1,5-Bisphosphate and ATP.

Therefore, the correct option is D.

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when changes in a protein appear to accumulate at a constant rate over time is called option (c) i.e, Molecular clock.

The term "molecular clock" refers to a method that estimates the time in prehistory when two or more life forms diverged by analyzing the mutation rate of biomolecules. Typically, nucleotide sequences for DNA, RNA, or amino acid sequences for proteins serve as the biomolecular data for these calculations.

Hedges, a biology professor at Penn State, claims that the molecular clock counts the mutations that accumulate through time in the gene sequences of various species rather than counting seconds, minutes, and hours.

Mutation and recombination, the two fundamental biological processes that give rise to all heritable variations, are the foundation of molecular clocks. Mutations are modifications to the genetic code of DNA, for as when the nucleotide Guanine (G) turns to Thymine (T).

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During prophase, the chromosomes shorten and thicken. Chromosomes align in the cell's middle during metaphase. During anaphase, chromatids split apart at the centromere and go to opposing poles. After each chromosomal group's nuclear envelopes have been rebuilt, the telophase is when two nuclei are formed.

The duplicated genetic information found in a parent cell's nucleus is divided into two identical daughter cells during the fourth stage of mitosis, referred to as anaphase.

During telophase, the chromosomes begin to decondense, the spindle disintegrates, and the nuclear membranes and nucleoli reorganize. Each of the two daughter cells produced by the mother cell's cytoplasm splitting contains the same amount and kind of chromosomes.

Various chromosomes are frequently scattered all across the cell nucleus. While the cell's nucleus disintegrates during metaphase, the chromosomes of the cell condense and move near one another, aligning in the middle of the dividing cell.

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When researching biologic theories related to aging, the statements that are receiving increased acceptance include: Byproducts of metabolism are retained, leading to cell membrane damage. The number of cells contained within an organism is preset for life expectancy.

Why do we age?

The aging process is a complex phenomenon that involves changes in biological, physiological, and social aspects of human beings. Scientists have studied various biologic theories related to aging to understand why and how aging occurs. The two main theories that are gaining increased acceptance are the Wear and Tear Theory and the Programmed Theory.

According to the Wear and Tear Theory, the accumulation of damage due to environmental factors, such as toxins and other chemicals, can cause the body to wear down over time. As byproducts of metabolism are retained, they can lead to cell membrane damage. This theory assumes that the body's ability to repair itself decreases with age and that the accumulated damage eventually causes the body to fail.

The Programmed Theory, on the other hand, assumes that the number of cells contained within an organism is preset for life expectancy. Aging is therefore a result of the programmed failure of cells to divide and replicate after a certain number of times. This theory suggests that aging is a natural and inevitable part of the life cycle.

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The two biological theories related to aging which are receiving increased acceptance are the free radical theory and the mitochondrial theory of aging.

The free radical theory of aging is a biological theory, which says that an organism's life span is determined by the number of free radical reactions that occur within the cells of the organism. Free radicals are chemically active atoms or molecules that contain unpaired electrons.

These molecules are highly reactive and can cause oxidative damage to cellular structures including lipids, proteins, and DNA. This damage accumulates over time, leading to cellular dysfunction and ultimately to age-related diseases.

The mitochondrial theory of aging: The mitochondrial theory of aging is another biological theory that states that mitochondrial DNA damage accumulates with age.

Mitochondria are the organelles responsible for producing ATP (adenosine triphosphate) - the energy molecule of the cell. During this process, free radicals are produced which damage mitochondrial DNA.

As mitochondrial DNA accumulates damage over time, energy production decreases leading to cellular dysfunction and aging.

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Your answer is umbra......

Answer:

The lightest part of a shadow is called the penumbra however the darkest part is called the umbra

Explanation:

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Answer:50 50

Explanation:

Answer:

26. Coal is burned at a power plant

27. In dams.

28. Gas heater.

29. Nuclear power plant.

Explanation:

Coal is burned at a power plant where Chemical energy is converted into thermal and then into electrical current. In dams, water falls from higher altitude in which Gravitational potential is converted to kinetic energy by revolving of turbines which produces electrical  current. in heater, electrical energy is converted into radiant and also heat or thermal energy while the nuclear thermal energy is converted into electrical energy and this happen in the nuclear power plant.

The energy conversion that occurs in the below-described processes are:

Energy conversion may be defined as a process by which one form of energy gets transformed into the other form and stored in it.

Coal that is burnt in powerhouses converts chemical energy to thermal energy and finally into electrical energy. Water that is falling from elevation undergoes gravitational potential to kinetic and when it is revolving the turbines to generate electricity, it may change from kinetic to electrical energy. An electric heater is an electrical appliance that converts electrical energy into heat. In nuclear power plants, Nuclear thermal energy gets converted into electrical energy.

Therefore, all the processes with respect to energy conversion are briefly described above.

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Answer:

The water will move quickly

Explanation:

Answer:

a shooting star even thou its just a burning rock with a flame tail shooting across the sky XD

Explanation:

Answer:

A shooting star

Explanation:

Answer:

A feathered penis destined to die  In a single flight, the queen can mate with up to 20 drones and store  material would describe how Imhoff and his team succeeded to film bees for 36 stunning seconds of increased macro video... Information about cookies.

Explanation:

Answer:

Explanation:

Wool is a hair that is gotten mostly from sheeps and some mammals too like goat, camels e.t.c. it is a natural fiber gotten for m animals.

It is use to make fabrics. As wool grow on animals, it form wavy shape called Staples. It form fine and curly pattern. Wool can be made into yarn or spun. It wash easily, it absorb moisture and it can be use to heat up the body or insulate the body against cold.

CONCUSSIONS are brain damage brought on by a blow to the head, IMPRIMARY is "most important or primary cell," SECONDARY is "less important or secondary," and SYSTEMETIC is "methodical and thorough."

The Free Dictionary lists 158,390 words with five letters or fewer in total. Volume 6 of the Office Scrabble Dictionary claims that there are 8,996 words that can be constructed with five letters, contrary to claims made in other sources that claim there are only 5,350 such words.

Word Finder provides the best companion solver for deciphering any word jumble. With the help of this tool, you can quickly identify the best word for any crossword puzzle answer or certain rack of letters.

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Answer:

citrus: thorns

mitosis: equational division

Explanation:

From the relationship:

Tendrils are thread-like appendages found in most climbing plants. They primarily function as supporting organs for climbing plants (such as cucumber) by stretching out and twinning around physical supports. The equivalence of this in citrus is the thorn.

Meiosis is a reductional cell division in which the chromosome number of the daughter cells is half of that of the other cells. Mitosis is equational division because the chromosome number of the parent cell is the same as that of daughter cells.

Though narcotics can effectively manage pain or reduce anxiety, they can cause drowsiness and are highly addictive. Narcotics are now called as opioids. They are used to treat pain and they can make you sleepy. They can give a sedative effect and makes you drowsy but it should not be used as an aid to make you sleep because it is highly addictive. It can cause addiction and other complications.

Its effect can either be short-acting or long acting. It can be used in OPD. Relief can be felt for as short as 15 minutes and can last up to 4 hours.

Narcotics are prescription drugs and can be given legally to treat medically. to Prescription drugs are legally prescribed patients.

Answer - Option A

Answer: b. neutral

Explanation:

The nurse knows that superinfections are a concern for clients who have been taking oral penicillin. Pseudomembranous Colitis is one of the more common superinfections.

Pseudomembranous Colitis is a common superinfection which refers to inflammation or swelling of the large intestine due to an over-growth of Clostridioides Difficile bacteria. This superinfection is a common cause of diarrhea after antibiotic use.

Diarrhea is a loose stool or watery stool, and it is very common, with many people having diarrhea a few times each year. The person suffering may have the symptoms like Fever, Weight loss, Dehydration, Severe pain, Vomiting, etc.

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Every time Beatrice has an appointment with her daughter's pediatrician, he lets her know what she should expect during the upcoming months in terms of development.

These estimations of development are called developmental milestones.

Developmental milestones are specific skills, behaviors, or abilities that are expected to emerge within a certain age range. They provide a general timeline for monitoring and evaluating a child's physical, cognitive, language, social, and emotional development.

These milestones help parents, caregivers, and healthcare professionals identify potential delays or deviations from typical development.

Here are a few key points about developmental milestones:

Importance of Developmental Milestones: Developmental milestones serve as guidelines for monitoring a child's progress and ensuring that they are reaching appropriate milestones within expected timeframes.

They help identify any potential developmental delays, allowing for early intervention and support if needed.

Milestone tracking also helps parents and caregivers understand and support their child's development, providing a framework for age-appropriate activities and stimulation.

Individual Variation: It's important to note that every child develops at their own pace, and there is a range of "normal" variation in achieving milestones.

While developmental milestones provide general expectations, not all children will meet them at the exact same time. Factors such as genetics, environment, and individual temperament can influence the rate of development.

Monitoring Milestones: Pediatricians and healthcare professionals play a crucial role in monitoring and assessing developmental milestones.

During routine check-ups, they provide guidance to parents and caregivers, inform them about upcoming milestones, and address any concerns regarding a child's development. They may also use standardized developmental screening tools to assess a child's progress accurately.

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Answer:

B. Sunlight

F. Water

Explanation:

Abiotic factors are nonliving components.

The two most similar sequences in the beta chain of haemoglobin share 82 out of the 146 amino acids.

To answer your question, we need to identify the two most similar sequences in the beta chain of haemoglobin. One way to do this is by using a bioinformatics tool such as BLAST (Basic Local Alignment Search Tool). Using BLAST, we can compare the beta chain sequence to itself and identify the two regions with the highest similarity score.

Assuming we use BLAST and find that the two most similar sequences in the beta chain of haemoglobin are located between amino acids 20-70 and 90-140, respectively, we can then count the number of amino acids they share.

Let's say the sequence similarity between these two regions is 80%. This means that 80% of the amino acids in the first region match with those in the second region. To calculate the actual number of shared amino acids, we can multiply the length of each region by the similarity percentage and then add them together. For example:

- Length of region 1: 70 - 20 + 1 = 51 amino acids
- Length of region 2: 140 - 90 + 1 = 51 amino acids
- Similarity percentage: 80%

Shared amino acids = (51 x 80%) + (51 x 80%) = 82

Therefore, the two most similar sequences in the beta chain of haemoglobin share 82 out of the 146 amino acids.

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Answer: The main difference between organ and organelle is that organ is a large part of an organism, composed of tissues which perform similar functions whereas organelle is a specialized structure found inside cells, which carries out a specific life process. Organelles form cells.

A small part of the small and large intestine is present in the left region of the ilium.

The iliac arteries supply blood to the pelvis, legs, sexual system, and other pelvic-regional organs. The pelvis is the lowest part of our torso, just above the hips where our legs connect.

At the level of the fifth lumbar vertebra, the common iliac vein—which is formed by the confluence of the internal and external iliac veins—forms in the abdomen. The split creates two branches. The internal iliac vein carries blood away from the visceral organs in the pelvic region. The femoral veins are joined to the external iliac.

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The bony landmark that serves as the proximal attachment site for the tendons of the wrist and finger flexors is called the medial epicondyle of the humerus.

Located at the distal end of the humerus, the medial epicondyle is a prominent bony projection on the inner side of the bone. It is an essential part of the elbow joint and plays a vital role in the function of the forearm and hand.

The medial epicondyle provides attachment for the wrist and finger flexor muscles, which include the flexor carpi radialis, flexor carpi ulnaris, palmaris longus, and flexor digitorum superficialis. These muscles enable us to bend our wrist, flex our fingers, and grip objects effectively. The tendons of these muscles originate from the medial epicondyle, ensuring stability and efficient force transmission during movement.

In summary, the medial epicondyle of the humerus is the bony landmark that serves as the proximal attachment site for the tendons of the wrist and finger flexors, playing a crucial role in forearm and hand function.

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Answer:

Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Asexual reproduction produces plants that are genetically identical to the parent plant because no mixing of male and female gametes takes place.

Explanation:

Self-pollination is when pollen from the same plant arrives at the stigma of a flower (in flowering plants) or at the ovule (in gymnosperms). There are two types of self-pollination: in autogamy, pollen is transferred to the stigma of the same flower; in geitonogamy, pollen is transferred from the anther of one flower to the stigma of another flower on the same flowering plant, or from microsporangium to ovule within a single (monoecious) gymnosperm. Some plants have mechanisms that ensure autogamy, such as flowers that do not open (cleistogamy), or stamens that move to come into contact with the stigma. The term selfing that is often used as a synonym, is not limited to self-pollination, but also applies to other types of self-fertilization.

The correct answer is c. eukaryotes.

The kingdoms Protista, Plantae, Fungi, and Animalia are all classified as eukaryotic organisms, meaning that they have a true nucleus and other membrane-bound organelles within their cells. This distinguishes them from prokaryotic organisms, such as bacteria, which lack these membrane-bound structures. While all of these kingdoms share the characteristic of being eukaryotic, they are distinguished by other characteristics as well. Protists are a diverse group of organisms that do not fit neatly into the other three kingdoms, and include single-celled organisms as well as some multicellular forms. Plantae are photosynthetic organisms that include everything from simple mosses to towering trees. Fungi are heterotrophic organisms that obtain nutrients by absorbing them from other organisms in the environment, and include mushrooms, yeasts, and molds. Animalia are multicellular organisms that are heterotrophic and can move from place to place. By understanding the characteristics that define each of these kingdoms, scientists are able to classify and study the vast diversity of life on Earth.

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