Answer: Males inherit only one X chromosome, so they show all traits on that one chromosome without another to mask them
Explanation: Males are born with XY Females are born with XX
FILL IN THE BLANK biomes are areas with a similar climate and biological community that can extend across _________.
Biomes are areas with a similar climate and biological community that can extend across different continents.
Biomes are large-scale ecological regions characterized by specific climate patterns and the presence of distinct plant and animal communities.
These regions can encompass vast areas and may extend across different continents. Biomes are defined based on factors such as temperature, precipitation, soil type, and vegetation.
For example, some of the major biomes include the tropical rainforest, temperate deciduous forest, desert, tundra, grassland, and aquatic biomes such as marine and freshwater ecosystems.
Each biome has its unique set of environmental conditions and species adapted to those conditions.
The distribution of biomes is influenced by various factors, including latitude, altitude, ocean currents, and prevailing winds. These factors contribute to the formation of distinct climate patterns that shape the characteristics of each biome.
While there may be variations within a biome, such as different subtypes or transitional zones, the overall similarity in climate and biological community allows for the classification and identification of these regions on a global scale.
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Choose the true statement below
O Linkage (viewed from results of typical crosses) always occurs when two loci are on the same chromosome.
O when two genes are over 50 map units apart, a crossover would theoretically occur 0% of the time
O when two genes are over 50 map units apart, a crossover can theoretically occur 100% of the time.
O The percentage of tetrads involved in exchange between two genes is equal to the number of recombinant progeny seen
O A single crossover on a chromosome will ahways yield the recombinant phenotype of the genes you are interested in
The true statement is when two genes are over 50 map units apart, a crossover can theoretically occur 100% of the time, option 3 is correct.
The phenomenon of crossing over during meiosis allows for the exchange of genetic material between homologous chromosomes. The likelihood of crossing over between two genes is influenced by their distance apart on the chromosome, as measured in map units. Map units, also known as centimorgans, represent the frequency of recombination events.
When two genes are located far apart, specifically over 50 map units apart, the probability of at least one crossover occurring between them approaches 100%. This is due to the random nature of crossing over and the increased likelihood that recombination events will happen during the process of meiosis, option 3 is correct.
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The correct question is:
Choose the true statement below
1. Linkage (viewed from results of typical crosses) always occurs when two loci are on the same chromosome.
2. when two genes are over 50 map units apart, a crossover would theoretically occur 0% of the time
3. when two genes are over 50 map units apart, a crossover can theoretically occur 100% of the time.
4. The percentage of tetrads involved in exchange between two genes is equal to the number of recombinant progeny seen
5. A single crossover on a chromosome will ahways yield the recombinant phenotype of the genes you are interested in
some help at this??
if you dont see it its polination,fertilization,germination
Answer:
Pollination: Pollen, Fruit, bees, wind, animals
Fertilization: Ovule, ovary, seed, pistil,
Germination: New plant, ripe, grain
Explanation:
In depth summary of asexual reproduction? Quick pls
Answer:
Asexual reproduction is a mode of reproduction in which a new offspring is produced by a single parent. The new individuals produced are genetically and ...
Two parents take part: Single parent
Fertilization takes place: No Internal fertilization or External fertilization
Variation occurs in offspring: Offspring are genetically identical to each other and to t...
Gametes are involved: No gametes
Answer:
Asexual reproduction is a type of reproduction that involves a single parent and results in offspring that are genetically identical to the parent. This process is used by many organisms, including bacteria, fungi, plants, and some animals. There are several different types of asexual reproduction, each with its own unique characteristics. In binary fission, a common form of asexual reproduction in bacteria, the parent cell divides into two identical daughter cells. In budding, a form of asexual reproduction used by some fungi and invertebrates, the parent produces a small, genetically identical bud or outgrowth that eventually separates from the parent and grows into a new individual.
A hot, dry summer will reduce crop yields in part becausea)The stomata of plants stay open to help cool the leaves.b)Too much carbon dioxide enters the plants when stomata are wide open.c)Carbon dioxide uptake is reduced by the stomata closing to prevent excessive water loss.d)Oxygen uptake is reduced by the stomata losing to prevent excessive water loss.
The correct answer to the question is c) Carbon dioxide uptake is reduced by the stomata closing to prevent excessive water loss. During a hot and dry summer, plants tend to lose a lot of water through transpiration, which is the process of water evaporating from the leaves.
In order to conserve water, plants close their stomata, which are small openings on the leaves that allow for gas exchange. When stomata are closed, the amount of carbon dioxide that enters the plant is reduced, which can limit the plant's ability to carry out photosynthesis and produce energy.
This reduction in photosynthesis can result in lower crop yields. While it is true that stomata can also stay open to help cool the leaves, this is not the main reason for reduced crop yields during a hot and dry summer. It is also not true that too much carbon dioxide enters the plants when stomata are wide open or that oxygen uptake is reduced by the stomata closing to prevent excessive water loss. Hence, c is the correct option.
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which one of the following is the highest level of environmental organzation?
Answer:
Biosphere
Explanation:
It is the highest level of organization. It is the global ecological system which consists of all the living organisms and other factors which supports life.
is salmon and shark have the same gas exchange?
Answer:
yes
Explanation:
because oxygen and carbon dioxide is formed into water by the gills
4. The DNA code for aspartic acid is
A) G-C-U
B) C-U-G
C) C-T-G
D) C-C-T
Answer:
The correct answer is B) C-U-G.
Explanation:
In the genetic code, each amino acid is specified by a sequence of three nucleotides, known as a codon. The codon for aspartic acid is C-U-G, which is read from the DNA template strand as G-A-C.
The DNA code for aspartic acid is C-U-G. Therefore, option (B) is correct.
Why is DNA code important?The long molecule known as DNA, also known as deoxyribonucleic acid, contains our individual genetic code. It contains the instructions for making all of our body's proteins, similar to a recipe book.
The hereditary code can be perused utilizing a codon outline. To use this chart, first find the first, then the second, and then the third nucleotide in the codon. Then, the chart will show which codon codes for which amino acid.
Guanine, cytosine, adenine, and thymine—commonly referred to as G, C, A, and T, respectively—are the only four key chemicals in which the DNA of life on Earth naturally stores its information.
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The remains of living plants or animals are called fossils.
True
False
Explanation:
The remains of living plant or animals are called fossils
The answer is (True)
In which of the following does the muscle apply force while maintaining an equal length?
a. Eccentric muscle contraction
b. Isotonic muscle contraction
c. Concentric muscle contraction
d. Isokinetic muscle contraction
e. Isometric muscle contraction
Isometric muscle contraction is a type of muscle contraction in which the muscle applies force while maintaining an equal length.
In an isometric contraction, there is no movement or change in the length of the muscle. Instead, the muscle contracts and exerts force against an immovable object, such as a wall or floor. This type of contraction is essential for maintaining posture and stabilizing joints. When you hold a plank, for example, you are performing an isometric contraction of your abdominal muscles.Isotonic muscle contraction is a type of muscle contraction in which the muscle contracts and changes length. There are two types of isotonic contractions: concentric and eccentric. In a concentric contraction, the muscle shortens as it contracts.
When you lift a weight, for example, your biceps muscles are performing concentric contractions. In an eccentric contraction, the muscle lengthens as it contracts. When you lower the weight, your biceps are performing eccentric contractions. Isokinetic muscle contraction is a type of muscle contraction in which the speed of contraction is constant, regardless of the amount of force generated. Isokinetic contractions are often used in rehabilitation settings to help patients recover from injuries. Eccentric muscle contraction is a type of isotonic contraction in which the muscle lengthens as it contracts.
When you lower a weight, for example, your biceps are performing eccentric contractions. Concentric muscle contraction is a type of isotonic contraction in which the muscle shortens as it contracts. When you lift a weight, for example, your biceps are performing concentric contractions. Thus, the correct option is e. Isometric muscle contraction.
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Red and white coat color are co-dominant in cattle. If a pure white cow and a pure red cow mate, what will the phenotypic outcome of the mating be?
In Natural selection, variation in a species creates many different individuals. Some individuals are suited for the environmental conditions and others are not. What happens to the ones that are not suited?
A. They continue on in the population, there are just fewer of them.
B. Their population will continue to grow because they find a way to adapt
C. The struggle to survive leads to them being killed off and their genetics leave with them. They don't live long enough to mate or have offspring.
C. The struggle to survive leads to them being killed off and their genetics leave with them. They don't live long enough to mate or have offspring.
What is Offspring?
Offspring refers to the biological descendants of an individual organism. These descendants inherit genetic information from their parents through the process of reproduction. In most species, the offspring resemble their parents to some extent, but also exhibit some variation due to genetic recombination and mutation. Offspring can be produced either sexually, through the fusion of gametes from two parent organisms, or asexually, through processes such as budding or fragmentation. The survival and reproductive success of offspring is a fundamental aspect of evolution and natural selection.
This is the basic concept of natural selection - individuals who are not well-suited to their environment are less likely to survive and reproduce, while those who are better adapted are more likely to pass their traits on to the next generation. Over time, this process can lead to significant changes in the characteristics of a population, as favorable traits become more common and unfavorable traits become less common or even disappear altogether.
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43) which evidence suggests that upper motor neurons in the primary cortex have a preferred direction?
One of the pieces of evidence that suggests upper motor neurons in the primary cortex have a preferred direction is the phenomenon of directional tuning.
Directional tuning refers to the fact that these neurons exhibit a higher firing rate when movement is directed in a specific preferred direction. Studies using single-neuron recordings in animal models have shown that when a monkey or other animals perform motor tasks, such as reaching or grasping objects in different directions, specific upper motor neurons in the primary cortex exhibit increased activity when the movement is in their preferred direction. Microstimulation studies in which small electrical currents are applied to specific areas of the primary cortex have also demonstrated that stimulating different locations can elicit specific movements in particular directions. This suggests that the upper motor neurons in those areas are organized according to a somatotopic map, with specific regions corresponding to different body parts and their preferred movement directions. The presence of directional tuning in upper motor neurons and the ability to elicit specific movements by stimulating different cortical areas provide evidence for the existence of a preferred direction in the primary cortex's upper motor neurons.
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Upper motor neurons in the primary cortex have a preferred direction as evidence from the "direction tuning" concept suggests.
The direction tuning concept is based on the observation that the preferred directions of upper motor neurons in the primary motor cortex are not random. They are distributed in a way that makes sense anatomically, indicating that this organization reflects the underlying organization of the musculature.
The direction tuning phenomenon is the strongest evidence for the existence of the preferred direction of upper motor neurons. When the stimulus is delivered in the neuron's preferred direction, it will produce a stronger signal than when it is delivered in a different direction.
In summary, the evidence that suggests that upper motor neurons in the primary cortex have a preferred direction is the direction tuning concept.
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Which of the following best describes the difference between the functions of carbohydrates and nucleic acids?
A)Carbohydrates store energy efficiently, while nucleic acids store and pass on a cell's genetic
information
B)Carbohydrates trigger a variety of metabolic processes in cells, while nucleic acids decode and
express genetic information as proteins.
C)Carbohydrates reinforce the structure of cells, while nucleic acids break down cell membranes.
D)Carbohydrates store energy in fats, while nucleic acids donate energy to various biochemical
reactions.
Answer:
In my knowledge
Its option A
the enzyme lactase speeds up the break down of lactose into what 2 smaller monosaccharides. True or False?
True , Lactase breaks down lactose into the monosaccharides galactose and glucose
Lactose intolerance occurs when your small intestine doesn't produce enough of an enzyme (lactase) to digest milk sugar (lactose). Normally, lactase turns milk sugar into two simple sugars — glucose and galactose — which are absorbed into the bloodstream through the intestinal lining. If you're lactase deficient, lactose in your food moves into the colon instead of being processed and absorbed. In the colon, normal bacteria interact with undigested lactose, causing the signs and symptoms of lactose intolerance. Lactose digestion occurs in the small intestine with the help of the enzyme known as lactase. Lactase breaks down lactose into the monosaccharides galactose and glucose, which makes them available for absorption. Glucose ultimately gets taken up by our cells with the help of insulin. Galactose is transported to the liver, where it is turned into glucose for use in energy production.
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1. What type of chemical reaction is the following equation?
AIBr3 +K → KBr + AI
Answer:
Single Displacement (Substitution)
Explanation:
Aluminum Bromide + Potassium = Potassium Bromide + Aluminum
Reactants:
Aluminum Bromide - AlBr3, Potassium - K
Products:
Potassium Bromide - KBr, Aluminum - Al
Answer:
Single Displacement (Substitution)
Explanation:
Humans have a lot of homologous structures in common with other animals, and several of these structures are no longer in working order in human bodies. These nonfunctioning structures are called vestigial structures. They still show evidence of common ancestry, but they do not do the same things in humans as they do in other animals.
Listed below are mostly vestigial structures. Select the one that serves a purpose in humans.
(1 point)
Responses
1. pelvis: supports upper body and attaches to lower body in humans versus being tiny and nonfunctional in legless animals like whales and snakes
2. hair raising: goosebumps in humans versus raising hackles to appear larger and aggressive in other animals like cats and monkeys
3. ear muscles: ability to wiggle ears in humans versus rotating ears to hear predators in prey animals like deer and rabbits
4. tail: tail bone in humans versus long tails for balance and communication in other animals like lizards and wolves
Pelvis: supports the upper body and attaches to the lower body in humans versus being tiny and nonfunctional in legless animals like whales and snakes.
A physical trait that distinguishes two or more species, such as a complicated bone structure or a body plan, may have been passed down from a common ancestor. A common ancestor's evolutionary history causes physical characteristics to be homologous.
For instance, the forelimbs of people, dogs, and whales all appear quite different from the outside. This is a result of their adaptation to various surroundings. However, if you examine the forelimbs' bone structure, you'll notice that all species share a fairly similar bone pattern.
What is a homologous?
Having the same typical structure and position. In Biology, homologous may refer to two anatomical structures or behavioral traits within different organisms which originated from a structure or trait of their common ancestral organism.
What does the pelvis support?
The pelvis has several important functions. Its primary role is to support the weight of the upper body when sitting and to transfer this weight to the lower limbs when standing. It serves as an attachment point for trunk and lower limb muscles and also protects the internal pelvic organs.
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A student is having a hard time telling the difference between a parrot and a toucan. Which type of medium would help the student recognize the differences?(1 point).
A student is having a hard time telling the difference between a parrot and a toucan. The student can use these mediums: audio recording, map, and photo.
Audio recording: Parrots make a lot of sound, and usually they sound like a person clicking their tongue. Toucans don`t make as much noise as parrots, and if they do, they sound like a frog croaking. So, an audio recording of these different calls can help him tell the difference between the two birds.
Map: Parrots and toucans live in different parts of the world.Parrots are widely distributed birds that live in the tropics of almost every continent. They are determined in Asia, Australia, Africa, Central America, and South America. Toucans have a miles smaller distribution than parrots. These birds are found only in Central and South America. They live almost exclusively in tropical forests and rainforests.
Photo: Using pictures, students can tell the difference between a parrot and a toucan. These two birds of hers differ greatly in their beaks. Most toucans have bodies the size of crows and large beaks that are half their length. Parrots generally have the same proportions regardless of size, but are much more variable in size.
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Answer:
Audio Recording
Explanation:
i would think photo because they look nothing alike but i guess audio recording since they sound different
Plan an experiment that demonstrates the relationship between electricity and magnetism using a galvanometer, wire loop, and a bar magnet.
What steps should be taken to set up this experiment? Move the steps into the correct order in the table. Not all steps must be used.
1. Place the galvanometer on a stable surface.
2. Connect the wire loop to the terminals of the galvanometer.
3. Position the wire loop in a vertical orientation.
4. Ensure that the wire loop is not in contact with any other conductive material.
5. Bring the bar magnet close to the wire loop without touching it.
6. Observe the galvanometer for any deflection or movement of the needle.
7. Move the bar magnet closer to the wire loop and observe the galvanometer response.
8. Slowly move the bar magnet away from the wire loop and note any changes in the galvanometer reading.
The steps are arranged in the correct order for setting up the experiment.
Starting with placing the galvanometer and connecting the wire loop, the subsequent steps involve positioning the wire loop, bringing the bar magnet close to the wire loop, and observing the galvanometer response at different distances.
The experiment aims to demonstrate the generation of electric current in the wire loop when exposed to a changing magnetic field, as indicated by the deflection or movement of the galvanometer needle.
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What are the possibilities for the
offspring's eye colour?
Both parents have brown eyes 75% chance of having a brown-eyed baby 18.8% chance of having a green-eyed baby, and a 6.3% chance of having a blue-eyed baby. If both parents have blue eyes: 99% chance of having a blue-eyed baby a 1% chance of having a green-eyed baby, and a 0% chance of having a brown-eyed baby.
Your child inherits the eye color from you and your partner. This is a combination of mom's and dad's eye colors. Generally, the color is determined by this combination and whether the gene is dominant or recessive. Every child has two copies of each gene. One from her mother and one of hers from her father.
Simply put brown-eyed parents can produce children with brown eyes blue eyes or virtually any color of the eye. Eye color is very complex and many genes are involved. Some people appear to have a black iris, which technically does not exist. doing. In fact, brown eyes are the most common eye color for newborns.
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PLEASE HELP I HAVE BEEN TRYING TO FIGURE THIS OUT A certain plant can have two flower color options: yellow or orange. A geneticist is looking to create a true-breeding yellow folowered plant. When he self pollinates the plant he believes to be true-breeding it results in 50% yellow folwered offspring and 50% orange flowered offspring. Do these results support or refute his belief that his plant is true breeding? Why or why not?
which of the following types of microbes is most similar to animals in terms of their cellular structure and metabolism?
The type of microbes that is most similar to animals in terms of cellular structure and metabolism is the protozoa. Option 2 is correct.
Protozoa are unicellular eukaryotic organisms that share similarities with animals in terms of their cellular structure and metabolic processes. Like animals, protozoa have membrane-bound organelles, including a nucleus, mitochondria, and other specialized structures. They also possess a flexible cell membrane, allowing them to move and respond to stimuli in their environment.
In terms of metabolism, protozoa obtain energy through various pathways similar to animals. They can undergo aerobic respiration, utilizing oxygen to produce ATP. Some protozoa can also engage in anaerobic metabolism under low-oxygen conditions. Additionally, protozoa can ingest and digest organic matter, similar to animal feeding habits. Option 2 is correct.
The complete question is
Which of the following types of microbes is most similar to animals in terms of their cellular structure and metabolism?
1. Bacteria
2. Protozoa
3. Fungi
4. Archaea
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A species that is thought of as K-
selected will have
A. most offspring survive into adulthood
B. small adults
C. most individuals die early
D. adapted to unstable environments
HELP ME PLZZ I NEED HELP
Answer:
A
only right answer
Which has the HIGHEST metallic characteristics?
Мо
Y
Nb
Zr
Answer:
It is either y or nb
Explanation:
I had a lesson on this but don't remember exactly.
PLEASE ANWSER CORRECT AND ASAPPL
Answer: B. Mostly nitrogen, carbon dioxide, water vapor.
Biomagnification is... concentration of a contaminant stays the same as you move to higher trophic concentration of a contaminant increases as you move to higher trophic level concentration of a contaminant increases as an individual grows concentration of a contaminant stays the same as an individual grows
Answer: Biomagnification refers to the process by which the concentration of a contaminant increases as you move to higher trophic levels in a food chain or food web. In other words, as organisms consume other organisms, the contaminants present in the prey accumulate and become more concentrated in the bodies of the predators.
To understand this process, let's consider an example involving a water ecosystem. Suppose a pollutant is released into the water, such as a pesticide or heavy metal. The primary producers, such as algae or aquatic plants, absorb small amounts of the contaminant from the water. As herbivorous organisms consume these primary producers, they ingest the contaminants along with their food.
Since the contaminant is not easily broken down or eliminated from the organisms' bodies, it accumulates over time. As a result, the concentration of the contaminant becomes higher in the herbivores than in the primary producers. Now, when carnivorous organisms consume the herbivores, they not only accumulate the contaminant from their own food but also from all the prey they have consumed. This leads to an even higher concentration of the contaminant in the carnivores.
Therefore, biomagnification describes the phenomenon where the concentration of a contaminant increases significantly as you move up the food chain or trophic levels. The highest concentration of contaminants is often found in top predators, such as large fish, birds of prey, or mammals, which can have adverse effects on their health and reproductive capabilities.
It's important to note that biomagnification primarily occurs for persistent and non-biodegradable contaminants that cannot be easily metabolized or excreted by organisms. These contaminants are often lipophilic (fat-soluble), which allows them to accumulate in fatty tissues and remain in the organism's body for long periods, leading to biomagnification.
Explanation:
In the example of using yeast to make bread, why is this a form of biotechnology?
Example of using yeast to make bread, because Yeast is an organism, and organisms are part of biology and Yeast is something that can be grown and used to help people meet their need for food.
The invention of the fed-batch technology for production of bakers' yeast has been a cornerstone of modern biotechnology, enabling the development of efficient production processes for antibiotics, biopharmaceuticals and technical enzymes.
Yeast has two primary functions in fermentation firstly To convert sugar into carbon dioxide gas, which lifts and aerates the dough. secondly To mellow and condition the gluten of the dough so that it will absorb the increasing gases evenly and hold them at the same time. Also in bread making the enzyme, amylase, is used to break down flour into soluble sugars, which are transformed by yeast into alcohol and carbon dioxide.
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we spent a lot of time discussing these two experiments: • Steward's Carrot Experiment • Gurdon's Nuclear Transplantation study Which of the following BEST describes how the outcomes of these studies relate to cell differentiation? A. Both studies supported the idea that, as a cell matures, it does not lose any nuclear material. Rather, the cell only expresses genes necessary for its specialized function. B. Steward's carrot experiment demonstrated that, as cells mature, they lose genetic potential. C. These studies investigated the role of positive and negative regulation on operons. D. Steward's carrot experiment supported the differential expression hypothesis, while Gurdon's study supported the progressive loss hypothesis.
B. Steward's carrot experiment demonstrated that, as cells mature, they lose genetic potential, is an incorrect statement.
The correct answer is A. Both studies supported the idea that, as a cell matures, it does not lose any nuclear material. Rather, the cell only expresses genes necessary for its specialized function.
Steward's carrot experiment showed that differentiated cells retain all the genetic material of the original cell and can revert to an undifferentiated state under the right conditions. Gurdon's nuclear transplantation study demonstrated that the nucleus of a differentiated cell contains all the genetic information necessary to direct the development of an entire organism. Together, these studies support the concept that cells differentiate by selectively expressing certain genes while silencing others, rather than losing genetic material.
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Explain why the amount of water a person needs to survive can be highly variable.
Answer:
The amount of water needed to sustain a person is highly variable because it depends upon not only the temperature and humidity of the environment where they live but the level of physical activity they engage in as well.Less than 1% of Earth's water is liquid freshwater.
Explanation:
The amount of water a person needs to survive can be highly variable because it typically relies on the temperature and humidity of the environment where they live along with the level of physical activity they have to perform.
What is the role of water in an organism's survival?The role of water in an organism's survival is determined by the fact that Living organisms definitely need water in order to play a vital role in the reactions taking place within the organism's cells and body.
Water acts as a universal solvent. Due to this, it provides a medium for chemical reactions to occur. Substances are also transported from one part of the body to the other in the dissolved state.
The requirement of water for living organisms must significantly depend on the temperature and humidity of the environment where they live along with the level of physical activity they have to perform.
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