Answer:
Explanation:
The pyramid shape is often used to represent energy pyramids, biomass pyramids, and numbers pyramids because it visually conveys the hierarchical structure and relative proportions of the entities being represented. In an energy pyramid, for example, the pyramid shape can be used to represent the flow of energy from one trophic level to the next, with the largest amount of energy at the bottom of the pyramid and the least amount of energy at the top. Similarly, in a biomass pyramid, the pyramid shape can be used to represent the relative amount of biomass at each trophic level, with the largest amount of biomass at the bottom and the least amount at the top. And in a numbers pyramid, the pyramid shape can be used to represent the relative number of individuals at each trophic level, with the largest number at the bottom and the least number at the top. Overall, the pyramid shape is a useful visual tool for representing hierarchical structures and the relative proportions of the entities within them.
Help! Pls due right nowwww
Answer:
Answers are in the image
A scientist is evaluating the effectiveness of two new medicated ointments for skin rashes (brand x and brand y). as a first step, the study tested the ointments on 21 patients with a chronic skin rash. which scenario will tell the scientist more about the ointments? a give 30 patients brand x and 30 patients brand y, then after one week switch the
medications for each group. b give the 60 patients one brand, observe the results, and then give them the other brand
and observe the results. c give 30 patients brand x and 30 patients brand y. d give 20 patients brand x, 20 patients brand y, and 20 patients a cream containing no
medication.
When evaluating the effectiveness of two new medicated ointments for skin rashes, it is important to design a study that will provide accurate and reliable results. In this case, the study tested the ointments on 21 patients with a chronic skin rash as a first step.
Option D is correct
Option A suggests giving 30 patients brand x and 30 patients brand y, then after one week switching the medications for each group. This approach, known as a crossover design, is a popular method for clinical trials. It helps to eliminate any potential biases that may arise due to individual variability by using the same group of patients for both treatments. However, it may not provide the most reliable results because the patient's response to the second treatment may be influenced by their response to the first treatment. Moreover, it may not be practical to switch the medication every week for a longer duration of the study.
Option B suggests giving the 60 patients one brand, observing the results, and then giving them the other brand and observing the results. This approach, known as a parallel design, is also a popular method for clinical trials. It involves randomly assigning patients to one of the two groups (brand x or brand y) and observing the results. This method is more reliable than a crossover design because patients are randomly assigned to one group and the effects of the first treatment do not influence the second treatment. However, this method takes longer to complete because patients have to be observed for a longer duration of the study.
Option C suggests giving 30 patients brand x and 30 patients brand y. This approach is similar to option B but with a smaller sample size. This method can be reliable if the sample size is adequate, and patients are randomly assigned to one group. However, it may not be practical for a longer duration of the study.
Option D suggests giving 20 patients brand x, 20 patients brand y, and 20 patients a cream containing no medication. This approach is known as a placebo-controlled design. It involves randomly assigning patients to one of three groups (brand x, brand y, or placebo) and observing the results. This method is the most reliable because it eliminates any potential biases that may arise due to individual variability or a placebo effect. However, this method may not be ethical if patients are suffering from a chronic skin rash and need medication.
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Why is the number of producer higher in food chain?
Answer:
because the plants are more thanare autotrophs, or organisms that produce their own food. ... They are at the bottom of the food chain because they are eaten by other organisms, and they don't need to eat for energy. Producers make their own food through the process of photosynthesis instead of eating organic matte
Based on the graph, what is the most likely conclusion about how pH affects the rate of reaction of this enzyme? Please need it ASAP
The enzyme does not have a high rate of reaction when the PH is very low in the the reaction medium.
What is PH and how is the rate of reaction is effected by PH?PH called as potential hydrogen and we generally observe it as a means to measure the acidic, or basic behavior of the substance.We also know the formula of PH = -log(H+) to calculate the concentration of hydrogen ions and hence the acidic behavior .The optimum PH is required for the enzyme to function smooth in the reaction medium.Alteration in the amount of PH results in the enzyme activity which ultimately results in the rate of reaction.Hence the rate of reaction is highly effected by the enzyme activity and enzyme activity is effected by PH of the participating medium.To know more about enzyme visit:
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Answer: H
Explanation:
True or False?
The 3 components of the Cell Theory are only referring to prokaryotic cells.
False
True
Answer:
False- Because there are other cells.
Explanation:
It is not true that the 3 components of the Cell Theory are only referring to prokaryotic cells.
What is cell theory?Cell theory is basically a biological theory first given in the nearly mid-nineteenth century that refers that organisms are comprised up of cells.
These cells are the fundamental structural or in other words, organizational unit of all organisms, and that all cells originate from pre-existing cells.
As per the cell theory, all biological lifeforms are comprised up of cells; which are the basic component of life, and each and every life evolved from preexisting life.
The cell theory is now that much well-established that it serves as one of biology's mandatory principles.
Theodor Schwann posited the conventional cell theory in 1839. This theory is distinguished into three parts.
The first section asserts that all organisms are made up of cells. The second section states that cells are the fundamental units of life.The third one that all cell arises from the pre-existing ones.Thus, the given statement is false as the cell theory implies to all cells.
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If a population is evolving, the allele frequency ________
Which process makes four daughter cells that are different than the parents cell? A. photosynthesis B. mitosis C. meiosis D. DNA Replication
Answer:
Meiosis. This is the result of crossing over, which takes place during prophase I of meiosis. In this process, the sister chromatids exchange genes which causes no resulting daughter cell to be identitical.
Explanation:
ASAP both questions please
1. During cell division in a plant cell you would not expect to see a
A. Centriole
B. Spindle
C. Cell plate
D. Chromosome
2. A twig from a willow tree placed in a bucket of water will soon sprout roots and can be planted to produce a new tree. This is an example of
A. Asexual reproduction
B. Sexual reproduction
C. Budding
D. Binary fission
Answer:
1)centriole
2)asexual reproduction
Using the diagram above, answer the following questions: 6. True or False. The arrow labeled C represents a transfer of chemical energy to mechanical energy. Explain why this is true or false. 7. True or False. The arrow labeled A represents a transfer of solar energy to chemical energy. Explain why this is true or false. 8. Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected? 9. Which arrow or arrows indicate a process that cycles carbon from living or nonliving organisms? Describe the process or processes you selected. 10. Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer.
middle which diagram shows the changes in appearance of a plant cell when a remains in a concentrated sugar solution for thirty minutes? what is th answer
The osmosis diagram is the one that most accurately represents how a plant cell might change in appearance after spending thirty minutes in a concentrated sugar solution.
Osmosis is the process by which water molecules move from an area with a lower concentration of solutes to an area with a higher concentration of solutes across a semi-permeable membrane.
If a concentrated sugar solution were present, the solute concentration outside the plant cell would be higher than that inside.
Water from inside the plant cell would naturally try to exit the cell as it is submerged in the concentrated sugar solution in an effort to balance the solute concentration on either side of the cell membrane.
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please answer the question on the image and explain the answer
Answer:
I would go with the third answer
why: when strand a was copied codons like AUU, GGU , ACC were formed but if strand b is copied the codons will be different (ATT,CCA,UGG) hence the sequence of amino acids will be different
Write one to two paragraphs discussing your thoughts and prior knowledge on the question prompt: “Why do you think Galileo’s work brought him into conflict with the Catholic Church?”
Please help me
Answer: Galileo was ordered to turn himself into the Holy Office to begin trial for holding the belief that the Earth revolves around the sun, which was deemed heretical by the Catholic Church.
Why does eclipse occur
Answer: When the moon orbits the earth, it can move between the sun and the earth. When this happens, the moon blocks sunlight from reaching Earth. This causes a solar eclipse or solar eclipse. During a solar eclipse, the moon casts a shadow on the earth.
Explanation:
Which organ serves as a storage depot for vitamins and minerals?a. liver b. stomach c. pancreas
The organ that serves as a storage depot for vitamins and minerals is the liver.
The liver plays a vital role in metabolism, including the storage and distribution of nutrients that are required for maintaining the body's overall health and function. The liver stores a variety of vitamins, including vitamins A, D, and B12, as well as minerals such as iron and copper. These stored nutrients are released into the bloodstream as needed, helping to maintain healthy levels of these essential nutrients throughout the body. The stomach and pancreas do not serve as significant storage depots for vitamins and minerals. The stomach is primarily responsible for digestion, while the pancreas produces enzymes and hormones that regulate blood sugar levels.
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the sponges found in lake baikal are filter feeders. why might gathering energy in this way be an advantage over photosynthesis in this part of the lake?
The advantage of being a filter feeder in the deep regions of Lake Baikal is that there is very little light for photosynthesis to occur.
Therefore, filter feeders can still obtain energy by filtering small organisms and organic particles from the water.
Photosynthesis requires sunlight, which can only penetrate the top layers of the lake. In the deep regions, filter feeding is a more reliable way to obtain food since it does not depend on the presence of light.
Additionally, the water in Lake Baikal is very cold and has a low nutrient concentration, which makes photosynthesis less efficient.
Filter feeders also have the advantage of being able to obtain a wide variety of food sources. They can filter out tiny organisms, such as bacteria and plankton, that photosynthetic organisms may not be able to utilize.
Overall, filter feeding is an advantageous strategy for the sponges found in the deep regions of Lake Baikal since it allows them to obtain energy in an environment where photosynthesis is not a viable option due to the lack of sunlight and low nutrient concentration.
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how does water get undergroud
Answer:
It seeps through soil, sand, and stone.
Explanation:
Almost all natural materials are porous, meaning they have little holes and openings things can seep through, especially liquid. The ground is made of natural substances, so therefore, water can get underground.
Here is the table 1.1 explain the differences between the average numbers of mitochondria in the cells shown in table 1.1
Thankss
Answer:
which school are you from I may answer the questions
In the table, it is shown that the liver and the heart muscle cells contain the majority of the mitochondria, as they need more energy to carry out most of the vital reactions, and the sperm has less, while red blood cells have not a single.
What is the function of the mitochondria?The mitochondria are an organelle in which energy is produced, such as ATP, and most eukaryotic cells have this organelle, however, there are some exceptions, such as mature red blood cells, which do not have this organelle and produce energy through glycolysis and the pentose phosphate pathway. More mitochondria will be in those cells that work more.
Hence, in the table, it is shown that the liver and the heart muscle cells contain the majority of the mitochondria, as they need more energy to carry out most of the vital reactions, and the sperm has less, while red blood cells have not a single.
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Understanding the causes and effects
of the disappearance of a species can
help people find ways to protect that
species. Use evidence from both texts
to support this statement.
It is possible to create successful protection plans for a species by understanding the factors that contribute to its extinction.
By examining the causes, such as habitat loss, pollution, or overhunting, we can identify the key factors contributing to the decline of a species. This knowledge allows us to address these specific threats and implement conservation measures accordingly.
Furthermore, understanding the effects of a species' disappearance, such as disrupted ecosystems or loss of biodiversity, helps us recognize the broader implications and interconnectedness of species within an ecosystem.
This awareness motivates conservation efforts aimed at preserving the balance and functionality of ecosystems, benefiting not only the endangered species but also the overall ecological health and sustainability.
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How to pronounce punnet squares?
Answer: puh-net
Explanation:
Describe the following symbiotic relationsships: A: Parasitism, B: Commensalism, C: Mutalism, GIVE EXAMPLES OF EACH
A) Parasitism is a type of symbiotic relationship in which one organism, called the parasite, benefits at the expense of the other organism, called the host. The parasite often lives on or inside the host, feeding on its resources and causing harm. A common example of parasitism is fleas on a dog. The fleas feed on the dog's blood and can cause skin irritation, itching, and even diseases like tapeworms.
B) Commensalism is a type of symbiotic relationship in which one organism benefits, and the other organism is neither helped nor harmed. An example of commensalism is a bird nesting in a tree. The bird benefits from the shelter and support provided by the tree, while the tree is unaffected by the presence of the bird.
C) Mutualism is a type of symbiotic relationship in which both organisms benefit. An example of mutualism is the relationship between bees and flowers. The bee collects nectar from the flower, which provides the bee with food, while also pollinating the flower, which helps the flower reproduce. Both the bee and the flower benefit from this relationship.
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list of some aspects of cell theory is below.
1. All living cells must have a cell wall. 2. All living cells require oxygen for survival. 3. The basic unit of life is a cell
1) Which of these aspects are included in cell theory?
es
A) 1 only
B) 1 and 3
C 2 and 3
D) 3 only
Answer:
the answer is D
Explanation:
Answer: D
Explanation:
which element is always present in proteins
Answer:
Carbon (C)Hydrogen (H)Oxygen (O)Hydrocarbonyl elements
Explanation:
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Does anyone know what this is?
i can't im so sorry
-_-
help please !!!!!!!!!!
Which statement best describes how an X-ray machine works?
A. It measures the time it takes light waves to reflect off an object.
B. It measures how long light waves are when they pass through an object.
C.It detects light waves that are reflected by an object.
D. It detects light waves that are able to pass through an object. D. is correct.
A dichotomous key uses
O inferences.
O DNA sequences.
O subjective descriptions.
O observable characteristics.
Answer:
observable characteristics
Explanation:
Dichotomous key use observable characteristics. thus option D is correct.
What is a dichotomous key?
A dichotomous key is a tool that can be used to identify organisms or objects in the natural world, such as plants, animals, or rocks.
The key consists of a series of paired statements or clues about features or characteristics, providing a stepwise guide toward identifying each entity.A dichotomous key is an important scientific tool, used to identify different organisms, based the organism's observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.
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how does carbon dioxide indirectly effect other speicies
Answer:
Rising CO2 levels affect a lot of plants directly by stimulating photosynthesis and reducing the loss of water (plant transpiration) by reducing the opening of the small pores in the leaves, known as 'stomata'. This triggers several more subtle, indirect effects.
Explanation:
I am giving 15 ponits! pls answer!!
How do you predict that a change to a single nitrogen base, such as an adenine or a thymine, could affect the function of a gene?
Answer:
Study whether a different protein is produced or has a different function because another amino acid has been synthesized
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Explanation:
FIRST TO ANSWER GETS BRAINLIEST
put the animals from the food web into food pyramid (producer, primary consumer, secondary consumer, and tertiary consumer)
Food pyramids represent food webs or chains. Producers are located on the base of the pyramid, while the last links are located on the top of the pyramid. 1st level ⇒ producers ⇒ tree, shrub, grass, 2nd level ⇒ herbivores ⇒ giraffe, rhino, grasshopper, mouse, impala, 3rd level ⇒ carnivore ⇒ fiscal shrike, caracal, lion, 4th level ⇒ carnivore ⇒ snake, baboon, shunk, leopard, 5th level ⇒ vulture.
What is a food pyramid?
A food pyramid is the representation of a food web drawn as a pyramid, in which the lowest levels are located on the base of the pyramid, while the highest levels are placed on the upper part.
1st level ⇒ producers ⇒ on the pyramid base2nd level ⇒ herbivores ⇒ follow producers3rd level ⇒ carnivores ⇒ follow herbivores4th level ⇒ carnivores ⇒ follow carnivores from the anterior levellast level ⇒ top predators ⇒ on the top of the pyramidEnergy flows from the bottom to the top of the structure, and as it does, part of it is lost to the environment as heat, following the 10% rule.
In the exposed web,
1st level ⇒ producers ⇒ tree, shrub, grass2nd level ⇒ herbivores ⇒ giraffe, rhino, grasshopper, mouse, impala3rd level ⇒ carnivore ⇒ fiscal shrike, caracal, lion4th level ⇒ carnivore ⇒ snake, baboon, shunk, leopard5th level ⇒ vultureYou can learn more about a food pyramid at
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what is the food eaten by an organism used for?
Answer:
Hence, organisms need to take food for their growth and survival.