you are a researcher studying succession in a desert community. you discover that wherever a particular pioneer shrub species is found, you consistently find diverse communities of small flowering plants under the shrubs but not out in the open. to explain this phenomenon, you perform an experiment with four treatments. in the first treatment, you leave the shrubs intact. you find that the flowers last a normal life span, and after they die, new flowers emerge under the shrub. in the second treatment, you remove the shrub and keep the flowers intact. you find that the flowers last a normal life span, but when they die, no new flowers emerge. in the third treatment, you replace the shrub with an umbrella. you find that the flowers last a normal life span, but when they die, no new flowers emerge. finally, in the fourth treatment, you replace the shrub with a t-shaped post. you find that the flower species last a normal life span and when they die, new flowers emerge under the post. what mechanism best explains why flower populations can be sustained under the desert shrubs?
Answers
Birds perch on the shrubs and eat the flower seeds there.
How are different species grouped?Classification of species using a binomial nomenclature. Naturalist Carl Linnaeus developed a method for identifying all different organisms and outlining their interdependence in the 18th century. Each species in this system is a member of a "genus," "family," "order," "class," "branch," and "kingdom."
What distinguishes different species?Features of a species that are shared by all of its members include things like height, length, and body size. Due to intra - specific diversity, such as varying body masses, various animals inside a genus may have different attribute values, but when these values are pooled, they result in a range that is specific to each species.
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Related Questions
Explain the significance of coevolution.
Answers
Coevolution is one of the main procedures via which organization of biological communities is done.
What is coevolution?It is the process of reciprocal evolutionary change, which takes place between the groups of species or pairs of species as they associate with one another. The activity of every species, which takes part in the association leads to selection pressure on the others.
It is one of the main approaches by which organization of biological communities is done. It can result in very unique associations between the species, like that between the plant and pollinator and between the parasite and host. It may also encourage evolution of novel species.
Thus, coevolution plays an essential role in the organization of biological communities.
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A new species of living thing is discovered. The cell theory states that which of the following must be true about this new living thing?
Answers
Answer:
The last one and the first one.
hope I could help you pls give this answer a hart thx
Explanation:
Label the diagram below. 1 2 3 4 5 6 7
Answers
Answer:
Need more information.
Explanation:
Put the rest of the question in the comments and I am happy to help!
PLZ HELP WILL MARK BRAINLEST
Match each vitamin or mineral to a symptom of its deficiency.
vitamin A
potassium
calcium
zinc
problems with fluid balance
thinning bones
vision problems
poor wound healing
Answers
Answer:
Vitamin A- vision problems
Potassium- problems with fluid balance
Calcium- thinning bones
Zinc- poor wound healing
Explanation:
7. What is the basic
unit of life for all
living things?
Answers
Answer:
Cells
Explanation:
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Answer:
Cells
Explanation: they are the most basic building units of life. All living things are composed of cells.
A visual artist is someone who ________________
a.
captures the meaning and importance of a subject through visual representation instead of words.
b.
seeks art in all images and has the talent to create a realistic portrayal of the images.
c.
captures moments in time, including their visual and emotional significance.
d.
is recognized for their ability to create any type of art, although most often prefers one medium over another.
Answers
Answer:
a
Explanation:
Which of the following terms below does not belong? What is your reasoning behind your choice?
biodiversity
endangered species
extinction
HIPPO
Answers
Answer:
DNA sequences.
Explanation:
DNA sequences, I believe, are the best evidence of common ancestry since they share more traits with more closely related organisms. The similarities and variances in fossils, anatomy, and embryos are all due to DNA.
PLZZZZZZZZ HELPPPPP ASAPPPPPPP IM TIMED
Answers
Answer: mouth = chemical physical stomach = chemical physical small and large = physical
Explanation: my mom taught me this she is a doctor
Answer:
Explanation:
Mouth is physical and chemical, the act of chewing is physical by tearing food into smaller pieces, and your saliva is chemical by beginning to break down carbohydrates.
Stomach is chemical and physical.
Churning in the stomach and peristalsis is also part of mechanical digestion. Peristalsis is the involuntary contraction and relaxation of the muscles in your stomach. Chemically your stomach breaks down proteins with hydrochloric acid.
Small Intestine has both, for physical it has segmentation and peristalsis, which helps mix the food mush with digestive juices, and chemical with the secretions of enzymes that help break down protein, fat, carbs, in order for the body to absorb different molecules.
Large Intestine is also both. Physically water is absorbed back into the body. Chemically, bacteria breaks down undigested materials, and helps produce certain vitamins.
One of the first explanations of evolution was put forth by a French biologist, Jean-Baptiste
Lamarck. He theorized that animals, in responding to different environments, adopted new
habits. Their new habits caused them to use some organs more and some organs less, which
resulted in the strengthening of the former and the weakening of the latter. New characters
thus acquired by organisms over the course of their lives were passed on to the next
generation. His theory proposed this process of use and disuse, repeated over many
generations, was how species evolved.
He was wrong. Why?
Answers
Answer:
Traits acquired during an organism's lifetime cannot be passed
Explanation:
The law of use and disuse of organs as postulated by Jean Lamarck was wrong due to the fact that environmentally acquired characters cannot be passed to offspring.
Changes to organisms that are not the level of the gene cannot be passed to the offspring. For example, a wrestler that got big muscles due to constant work out cannot pass big muscles to his offspring. The offspring will need to work out in order to have big muscles. This is because big muscles in the wrestler is environmentally acquired.
Only changes that happen to the genome of an organism (mutation) can be passed to offspring.
Why do ferns not grow as tallas gymnosperms and angiosperms? O Ferns lose water from vascular tissue easily, so plant height is limited by water availability and retention. Ferns would be less likely to successfully reproduce because sperm would have a greater distance to swim to the egg. Water is not efficiently transported or distributed throughout ferns to support taller growth. The cell walls of fern vascular tissue are not sufficiently rigid to support the growth of taller ferns. O Ferns require water to undergo a complete life cycle and could not secure sufficient water as a taller plant.
Answers
Ferns do not grow as tall as gymnosperms and angiosperms mainly due to their water transport and retention limitations.
Ferns have less efficient vascular tissue, which causes them to lose water more easily, restricting their height based on water availability. Additionally, their cell walls lack the rigidity required to support taller growth.
Ferns depend on water to complete their life cycle and for successful reproduction. In taller plants, the sperm would face greater difficulty swimming to the egg, reducing the chances of reproduction. Moreover, water distribution throughout ferns is less efficient, which prevents them from supporting the increased demands of taller growth.
In contrast, gymnosperms and angiosperms possess advanced vascular systems, enabling efficient water transport and improved structural support, which allows them to grow taller. Consequently, ferns are limited in height due to their water requirements, reproductive needs, and structural constraints.
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Fill in the blank to complete each statement.
The land that supplies water to a river system is called a___
Pollution from a single, identifiable source is called____
source pollution
Pollution that is difficult to link to a particular origin is called______ source pollution
Answers
I hope this helped good luck!
Answer:
other guy is right
Explanation:
Please answer both parts of this question and include a model.
1. Describe this mode of propagation, and draw a model to supplement your description. 2. Explain how it differs from the mode of propagation along the neuron.
Answers
1. In passive propagation, as the action potential goes from the start to the end of an axon, it decays or becomes weaker, and it is the most common method of transmitting electrical signals in neurons. 2. It differs from the mode of propagation along the neuron, the action potential is actively propagated along the axon without decay.
A passive signal can be generated by a receptor or by a spike in the membrane potential of an adjacent neuron. In the neuron, an electrical current flows from the dendrite to the cell body, down the axon and into the terminal, causing a change in the potential across the membrane. The current also generates an electrical field that spreads throughout the surrounding tissue, this electrical field, known as the extracellular potential, decays with distance and is much smaller than the intracellular potential. So therefore a passive signal can be detected by electrodes placed outside the neuron.
An action potential is initiated at the axon hillock, propagated along the axon, and terminates at the presynaptic terminal. In the neuron, an electrical current flows from the dendrite to the cell body, down the axon and into the terminal, causing a change in the potential across the membrane. The current also generates an electrical field that spreads throughout the surrounding tissue, this electrical field, known as the extracellular potential, decays with distance and is much smaller than the intracellular potential. So therefore it differs from the mode of propagation along the neuron, the action potential is actively propagated along the axon without decay.
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Which of the following statements is correct about the hierarchy of the taxonomic system currently used to classify organisms?
Question 19 options:
Many different classes of organisms belong to the same genus.
Many different kingdoms of organisms belong to the same phylum.
Many different orders of organisms belong to the same species.
Many different families of organisms belong to the same order.
Which kingdom includes an organism that can survive by photosynthesis in the presence of light or by consuming organic material in dark conditions?
Question 18 options:
Animalia
Protista
Plantae
Fungi
Examine the images here for two tree species. Which taxonomic grouping defines the commonality of these two trees?
Question 17 options:
These trees share the same genus but not the same species.
The trees share all of the taxa involved in classification.
These trees share the same genus but not the same phylum.
These trees share the same species but not the same genus.
Scientists often use a cladogram such as the one below to illustrate evolutionary relationships.
Which is the best explanation for separating reptiles from mammals?
Question 14 options:
the presence of an amniotic membrane in reptiles that is not found in mammals
the presence of hair in reptiles that is not found in mammals
the presence of an amniotic membrane in mammals that is not found in reptiles
the presence of hair in mammals that is not found in reptiles
Scientists often use a cladogram such as the one below to illustrate evolutionary relationships.
Which is the best explanation for separating reptiles from mammals?
Question 14 options:
the presence of an amniotic membrane in reptiles that is not found in mammals
the presence of hair in reptiles that is not found in mammals
the presence of an amniotic membrane in mammals that is not found in reptiles
the presence of hair in mammals that is not found in reptiles
A group of scientists discovered a new organism that is composed of many cells, gets its nutrition from decaying organisms, and has cell walls. To what kingdom would the new organism belong?
Question 12 options:
Plantae
Animalia
Fungi
Protista
The following cladogram shows the evolutionary relationships among five types of birds.
According to this cladogram, oystercatchers are more closely related to flamingos than to penguins.
Which of the following statements provides the best justification for this relationship?
Question 10 options:
The branch of the cladogram with oystercatchers is closer to the branch with flamingos than to the branch with penguins.
Both oystercatchers and flamingos are less closely related to the outgroup than penguins are.
Oystercatchers share a more recent common ancestor with flamingos than with penguins.
Oystercatchers share a common ancestor with flamingos but not with penguins.
Which statement best explains why a third domain, Archaea, was added to the original two domains of Bacteria and Eukarya?
Question 3 options:
Scientists discovered that some prokaryotes have cell walls.
Scientists discovered that eukaryotes have cell walls.
Scientists discovered that some prokaryotes live in extreme environments.
Scientists discovered that eukaryotes are unicellular.
Both plants and blue-green algae are photosynthetic but are classified as separate kingdoms. Which statement identifies a characteristic that distinguishes blue-green algae from plants?
Question 2 options:
Plants lack membrane-bound organelles and blue-green algae contain membrane-bound organelles.
Plants have specialized tissues and organs and blue-green algae do not.
Blue-green algae use their chlorophyll differently from plants.
Blue-green algae are better than plants at moving from place to place.
Answers
An organism that is composed of many cells, gets its nutrition from decaying organisms, and has cell walls belongs to kingdom fungi.
What is taxonomy?Taxonomy is the system of classifying all living things into appropriate groups. The incorrect statement about taxonomy is; "any different orders of organisms belong to the same species."
The kingdom that contains organisms that can survive by photosynthesis or by consuming organic material in dark conditions is fungi.
The difference between mammals and reptile is that the presence of hair in mammals that is not found in reptiles.
An organism that is composed of many cells, gets its nutrition from decaying organisms, and has cell walls belongs to kingdom fungi.
The reason why plants and blue-green algae are classified in different groups is because Blue-green algae use their chlorophyll differently from plants.
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Help me please. Will give 35 points
Answers
Copper
Properties
Malleable and ductile, good conductor of heat and electricity, resistant to corrosion, attractive colour, lustre
Uses
Water pipes, electrical wire, decorative goods
_____________________________________
Titanium
Properties
Good strength-to-weight ratio, light, resistant to corrosion, good conductor of heat but poor conductor of electricity
Uses
Drill bits, bicycles, golf clubs, watches and laptop computers, medical implants, jewellery, manufacturing aircraft and spacecraft
studocu which unknown(s) contained a lipid? which unknown(s) contained starch? draw the chemical structure of a carbohydrate and a lipid of your choice. name the structures you draw. why was water used as a negative control in the experiments in this lab?
Answers
1. Arachidonic acid, Oleic acid, Linoleic acid, and Palmitoleic acid are a few of the molecules that contain a lipid.
2. Rice, wheat, and maize are examples of substances that contain starch.
3. Cellulose makes up a carbohydrate.
For the majority of bodily metabolic functions, glucose, a type of carbohydrate, serves as the primary energy source. Lipids are a key source of energy and offer critical fatty acids for brain development. The non-nitrogen energy in parenteral nutrition is provided by lipids and carbohydrates together (PN).
Carbs and lipids vary primarily in that lipids are not water soluble while carbohydrates are. Both lipids and carbohydrates have the capacity to store energy, but only carbohydrates have the ability to form polymers due to their greater water solubility.
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Scientists use ______ to decide whether a substance is an element or a compound.
Answers
Answer: the periodic table
Explanation:
how many characteristics of living things are there?
Answers
Answer:8
Explanation:
Describe the function of each organelle. Nucleus Ribosome Endoplasmic reticulum Golgi apparatus
Answers
Answer:
Nucleus- Contains the cell's DNA; the control center of the cell
Ribosome- Synthesises proteins
Endoplasmic Reticulum- makes lipids and other materials for use inside and outside of the cell; breaks down harmful substances; transportation within a cell
Golgi Apparatus- processes and bundles macromolecules like proteins and lipids as they are synthesised
The Golgi apparatus is where the ribosomes of the ER produce proteins, which are then packaged in a membrane made of lipids and exported from cells. Charged molecules are held in the Golgi before being released and entering the cytoplasm (secretory vesicles).
What are the function of organelle in cells?An organelle is a microscopic structure that, like an organ in the body, has one or more specific tasks to carry out within the cell.
The nucleus, which house genetic material, the mitochondria, which generate chemical energy, and the ribosomes, which put together proteins, are some of the more significant cell organelles.
All cellular organelles are composed of macromolecules such lipids, proteins, nucleic acids, and carbohydrates (DNA, RNA).
Therefore, Nucleus Ribosome Endoplasmic reticulum Golgi apparatus function is coordinated together.
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What is the difference between a cell and a stem cell?.
Answers
Answer:
Difference is
Explanation:
Stem cells have the ability to divide and replicate themselves for prolonged periods of time. However, body cells such as muscle cells, blood cells, and nerve cells cannot replicate themselves. Stem cells can also remain unspecialized when they replicate.
GIZMOs- Nitrogen Cycle- High School
Please help label them
Answers
Answer:
Explanation:
third tank is nitrie nitrieying
Can someone help me answer this please
Answers
Answer:
first one is C and the second one is A
Explanation:
please mark brainliest
What are some of the ways that pollen can travel from one flower to another?
Answers
Answer:
pollinators + the wind
Explanation:
pollinators is probably the best answer here... pollinators are bugs like bees and butterflies that spread the pollen from one plant to another.
Answer:
Flowers must rely on vectors to move pollen. These vectors can include wind, water, birds, insects, butterflies, bats, and other animals that visit flowers. We call animals or insects that transfer pollen from plant to plant “pollinators”.
Explanation:
The reca gene product is part of ______________ that is activated when damaged dna has escaped repair and the distortion disrupts the process of replication.
Answers
The reca gene product is part of replication that is activated when damaged dna has escaped repair and the distortion disrupts the process of replication.
What are the types of DNA repair?At least five major DNA repair pathways—base excision repair (BER), nucleotide excision repair (NER), mismatch repair (MMR), homologous recombination (HR), and non-homologous end joining (NHEJ)—are active throughout the cell cycle and allow cells to repair DNA damage.
Excision repair is the most important DNA repair mechanism in both prokaryotic and eukaryotic cells.
The reca gene product is a replication component that is activated when damaged dna has escaped repair and the distortion disrupts the replication process.
The reca gene product is a component of SOS DNA repair that is activated when damaged DNA has escaped repair and the replication process is disrupted. When damaged DNA escapes repair and disrupts the replication process, recombinational repair is activated.
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PLS HELP FAST!!!! You have a natural-gas (methane, CH4) stove. When you ignite a natural-gas stove, the methane reacts with oxygen (O2) to produce carbon dioxide and water vapor. Write a balanced equation for this reaction, and be sure to show your work. (6 points)
Answers
Answer:
Methane (CH4) ( C H 4 ) burns in oxygen to produce carbon dioxide and water vapor. The balanced equation is: CH4+2O2→CO2+2H2O C H 4 + 2 O 2 → C O 2 + 2 H 2 O .
Explanation:
The balanced equation for the reaction of methane with oxygen is CH₄ + 2O₂→CO₂ + 2H₂O.
What is methane?Methane is a gas and a chemical compound with formula CH₄. It is a colorless and odorless gas and very flammable. It is made up of carbon and hydrogen. Methane comes under greenhouse gas.
As it is highly reactive, it reacts with the gases present in the environment. Here, methane is reacting with oxygen. When one molecule of methane reacts with two molecules of oxygen, it produces carbon dioxide and two molecules of water.
The reaction happens in the presence of heat and high temperature. The balanced reaction is written when the same number of moles are present on both sides of the reaction.
CH₄ + 2O₂ → CO₂ + 2H₂O.
Thus, the balanced equation for the reaction CH₄ + 2O₂→CO₂ + 2H₂O CH₄ + 2O₂ → CO₂ + 2H₂O.
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For guinea pigs, the allele for short hair (H) is dominant to the allele for long hair (h) and the allele for white claws (C) is dominant to the allele for black claws (c). A male guinea pig is mated with a female guinea pig that is heterozygous for both aforementioned traits. Of all of the offspring have short hair and around half have black claws, what is the most probable genotype of the father
Answers
Answer:
The father most likely has HH and cc as its genotypes.
Explanation:
In an experiment, a researcher prepares a reaction mixture by dissolving a substance in a buffered solution. The substance is the substrate of a certain enzyme. The researcher adds a small amount of the enzyme to the reaction mixture and measures the amount of product that is formed over time. Which of the following best predicts the immediate result of adding more substrate to the reaction mixture at the point indicated by the arrow in Figure 1?
answer choices
The amount of product will decrease until the reaction rate goes to zero.
The amount of product will increase until the reaction reaches its equilibrium point or until the substrate is used up by the reaction.
The amount of product will increase without stopping because the enzyme will be unchanged by the reaction.
The amount of product will decrease until the reaction reaches its equilibrium point or until the enzyme is been used up by the reaction
Answers
Until equilibrium is reached or all of the substrate has been eaten, the amount of product will continue to increase.
How can the rate at which an enzyme-catalyzed reaction occurs be determined?It is possible to identify enzyme catalysis by measuring the appearance of the product or the disappearance of the reactants. The same reactants may be used in a reaction, but a different catalyst may produce different results.
Which of the following would speed up how quickly reactants turn into products in a chemical reaction?The more the temperature rises, the more crashes occur. As a reactant's concentration rises, the likelihood of reactant collisions increases as well, accelerating the rate of the reaction.
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Use each of the following terms in a separate sentence.
1. keystone species
2. ecotourism
For each pair of terms, explain how the meanings of the terms differ.
3. hunting and poaching
4. endemic species and exotic specia
5. endangered species and threatened species
6. gene and germ plasm
7. CITES and Biodiversity Treaty
Answers
Answer:
...
Explanation:
what's the function of adrenaline in our body
well
my account got deleted rosa
Answers
Answer:
What is the function of adrenaline?
Adrenaline triggers the body's fight-or-flight response. This reaction causes air passages to dilate to provide the muscles with the oxygen they need to either fight danger or flee. Adrenaline also triggers the blood vessels to contract to re-direct blood toward major muscle groups, including the heart and lungs. The body's ability to feel pain also decreases as a result of adrenaline, which is why you can continue running from or fighting danger even when injured. Adrenaline causes a noticeable increase in strength and performance, as well as heightened awareness, in stressful times. After the stress has subsided, adrenaline’s effect can last for up to an hour.
Explanation:
I think I helped
Answer:
Key actions of adrenaline include increasing the heart rate, increasing blood pressure, expanding the air passages of the lungs, enlarging the pupil in the eye (see photo), redistributing blood to the muscles and altering the body's metabolism, so as to maximise blood glucose levels (primarily for the brain).
descent of the testis from the abdominal cavity to the scrotum is aided by a band of connective tissue called the
Answers
Descent of the testis from the abdominal cavity to the scrotum is aided by a band of connective tissue called the gubernaculum.
The gubernaculum, a fetal ligament that connects the caudal epididymis, testis, and bottom of the scrotum, also acts as a guide for the testes' entry into the scrotum.
The genito-inguinal ligament, or "gubernaculum," connects the lower pole of the gonad and the epididymis caudally to the future inguinal canal. Because he thought it led the testes to the scrotum, John Hunter gave the gubernaculum its name in the seventeenth century. The upper portion of the gubernaculum deteriorates. The lower part still contains the gubernaculum testis ("scrotal ligament"). This ligament anchors the testis to the most inferior region of the scrotum, preventing it from moving around too much inside the scrotum.
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Explain water's role as a solvent in blood.