The modulation of physiology or development in relation to day duration is known as photoperiodism. Some plant species can only blossom and go into reproductive times of the year due to photoperiodism.
What is photoperiodism ?Plants may adjust to seasonal variations in their surroundings through photoperiodism, which is a reaction to changes in daylength. Although blooming is the most well-studied manifestation of photoperiodism in plants, additional reactions to daylength include bud hibernation and bulb or tubers initiation.
What influences the photoperiodism?Although photoperiodic responses may be adequately anticipated, an organism's response can also vary depending on temperature, food, and other external conditions. Animals' usual migration, reproduction, and coat or plumage changes can be generated out of season by manipulating the length of the day artificially.
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which include fats, store energy that can be broken down to yield large amounts of energy.
Answer:
subcutaneous fat
suncutaneous
what 3 key concepts show that the groundwater system will heat the school more efficiently
An installation of a groundwater heat pump makes up the school's heating system. The piping for acquiring environmental heat is buried roughly 1.5 metres beneath the parking lot, the schoolyard, and the open areas. The water is heated by two heat pumps to the necessary input temperature. The advantage of the school's underfloor water heating system is its extremely low input temperature. The entire system combines dependability with little energy use.
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Which of the following would not be seen in a cross section through the woody part of a root?a. sclerenchyma cellsb. parenchyma cellsc. sieve-tube elementsd. root hairse. vessel elements
d. root hairs
The root hairs cannot be seen through the woody part of a root
The reason for this is that because of the integration of the apiblama during secondary growthence, the transverse section of the soft woody part of the root will not reveal the presence of root hairs.
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All of the following disciplines are major contributors to the field of environmental science except?a. Linguistics and physicsb. Biology and earth sciencec. Social sciences
All of the following disciplines are major contributors to the field of environmental science except linguistics and physics.
Environmental science is a multidisciplinary field that combines knowledge from a wide range of scientific and social science disciplines to understand the interactions between humans and the natural world. Biology and earth science are both major contributors to environmental science, as they provide understanding of the processes and systems that make up the natural environment. Social sciences, including fields such as economics, sociology, and anthropology, also play an important role in environmental science, as they provide insight into the social and cultural factors that influence human interactions with the environment. Linguistics and physics, while important fields of study in their own right, are not typically considered major contributors to environmental science.
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scientists estimate that whaling activity in the 19th and early 20th centuries had reduced the number of adult female southern right whales to as few as sixty individuals by 1920. this reduction resulted in a genetic bottleneck for the species. treaties to stop whaling have substantially increased the number of southern right whales. despite this increase, the bottleneck still threatens the future of the species. which capacity of the species is most severely diminished by the bottleneck?
a. acquiring random mutations
b. responding to environmental changes
c. maintaining a healthy social structure
d. remaining genetically stable.
The capacity of the southern right whale species that is most severely diminished by the bottleneck is the ability to remain genetically stable and maintain a diverse gene pool.
A genetic bottleneck is a reduction in the size of a population that leads to a loss of genetic diversity. This can occur due to a number of factors, including natural disasters, disease outbreaks, or human activities such as hunting or habitat destruction. In the case of the southern right whales, the population was severely reduced by whaling activity in the 19th and early 20th centuries, leading to a genetic bottleneck. The capacity of the species that is most severely diminished by the bottleneck is the ability to maintain a diverse gene pool, which is necessary for the species to adapt to changing environmental conditions and respond to new challenges. When a population experiences a genetic bottleneck, the number of different genes available for selection is reduced, leading to a loss of genetic diversity. This can make it more difficult for the population to adapt to new challenges and can increase the risk of extinction.
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FILL IN THE BLANK. the t test for independent means is used when each group is tested ____________.
The t test for independent means is used when each group is tested only once.
'What is t-test?'
A t-test examines two data sets' average values to ascertain whether or not they represent the same population.
To evaluate whether there is a significant difference between the means of two groups and their relationships, a t-test is an inferential statistic that is used. When data sets contain unknown variances and a normal distribution, such as the data set obtained from tossing a coin 100 times, t-tests are utilized.
In order to evaluate statistical significance, the t-test, a test used for hypothesis testing in statistics, uses the t-statistic, the values of the t-distribution, and the degrees of freedom.
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What is the function of nucleic acids?
Answer: Storage and expression of genomic information.
Explanation:
Nucleic acids contain both DNA (deoxyribonucleic acids) and RNA (ribonucleic acids). Its functions are:
1) to store genetic information.
2) controls the synthesis.
3) sequence of nitrogenous bases determines the protein development in cells.
4)double helix formation of DNA helps to ensure that no disorders occur.
5)DNA stores the genetic information and RNA transfers the genetic information.
Answer: nucleic acids consists the cell's information molecules. It involves both DNA and RNA.
functions of nucleic acids
1) it protects the information,as DNA source is extremely crucial.
2) DNA fingerprinting is another function of nucleic acids.
3)one major function is to carry information of genetics
Explanation:
What is Autonomic nervous system (sympathetic and parasympathetic division)?
The two halves of the autonomic nervous system are the sympathetic and parasympathetic nervous systems.
The two fundamental parts of the central nervous system are the spinal cord and the brain.
peripheral nervous system.
The peripheral nervous system is made up of the nerves and ganglia that are not connected to the brain and spinal cord, while the central nervous system is made up of the brain and spinal cord.
The somatic nervous system and the autonomic nervous system are also parts of the peripheral neural system.
The autonomic nervous system also includes the sympathetic and parasympathetic nervous systems. The "fight or flight" reaction is triggered by the sympathetic nervous system. The parasympathetic nerve system controls relaxing and digestive processes.
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The human population is increasing every day. How does this increase in population affect the natural resources that maintain humans?
a) Increases the supply of resources
b) Decreases the amount of resources
c) Results in less demand for resources
d) Improves the quality of the resources
The natural resources that maintain humans results in decreases the amount of resources. The correct option is b.
What are natural resources?Natural resources are resources derived from nature and used with minimal modification. This includes commercial and industrial use, aesthetic value, scientific interest, and cultural value.
The environmental impact of so many people is manifested in two ways: consumption of resources such as land, food, water, air, fossil fuels, and minerals.
Consumption waste products include air and water pollutants, toxic materials, and greenhouse gases.
Thus, the correct option is b.
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if a set of instructions that determines all of the characteristics of an organism is compared to a book, and a chromosome is compared to a chapter in the book, then what might be compared to a paragraph in the book? select one: a. a starch molecule b. a dna molecule c. an amino acid d. an egg
A DNA molecule (b) might be compared to a paragraph in the book.
The molecule that carries the genetic information necessary for an organism's growth and operation is called deoxyribonucleic acid, or DNA for short. The double helix form of DNA is made up of two connected strands that spiral around one another to resemble a twisted ladder. The backbone of each strand is composed of alternating deoxyribose and phosphate groups.
Adenine (A), cytosine (C), guanine (G), or thymine are the four bases that are joined to each sugar (T). The bases form chemical connections with one another, adenine with thymine and cytosine with guanine, which bind the two strands together. Biological information, such as the directions for constructing a protein or RNA molecule, is encoded in the base sequence along the backbone of DNA.
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Labrador Ducks: NOW HUMANS NAVE CAUSED THIS SITUATION: How are humans affecting the carrying capacity
of this organism, what human actions or environmental changes are causing their carrying
capacity to decrease? How have humans negatively affected this species? Have they taken their
habitatiland, polluted the water/land, built roads/buildings, hunted or killed, spread disease, or
done anything else that makes it harder for the species to survive?
It is not clear what species or situation you are referring to in your question. The Labrador Duck was a species of sea duck that was native to the Atlantic coast of North America, but it is now extinct. It is not known exactly why the Labrador Duck went extinct, but it is likely that a combination of factors played a role. Some possible reasons for the species' extinction include hunting, habitat loss, and changes in the availability of food due to human activities. It is not known how humans specifically affected the carrying capacity of this species, as carrying capacity is a concept that refers to the maximum population size of a species that can be sustained in a particular environment. Without more information, it is not possible to say how humans affected the carrying capacity of the Labrador Duck or how they negatively affected the species.
Which of the following is NOT occurring during interphase?
Cell Growth
DNA Condesing
DNA being Copied
Two new Cells are made
Answer:
the answer is "Two new cells are made" is NOT occurring during interphase.
Explanation:
Cell growth: During interphase, the cell grows in size and carries out its normal functions.DNA condensing: During interphase, the DNA within the cell's nucleus becomes more compact and organized, preparing for replication.DNA being copied: During interphase, the DNA within the cell's nucleus is replicated, or copied, in preparation for cell division.Two new cells are made: This event does not occur during interphase. Interphase is the phase between cell divisions, during which the cell grows, synthesizes proteins, and replicates its DNA. Cell division itself occurs during the next phase of the cell cycle, called the mitotic phase.The diagram shows the human circulation system with some blood vessels labeled A to J. The arrow shows the direction of blood flow.
Based in the diagram showing the human circulation system with some blood vessels labeled A to J;
A contains the least carbon dioxide
G veins contain the most glucose after a meal
J contains the least oxygen
F contains the least urea
B Contains blood at the highest pressure
2. Blood vessel A carries oxygenated whereas blood vessel J carries deoxygenated blood.
Blood vessel A does not contain valves whereas blood vessel J contains valves.
What are arteries and veins?Arteries and veins are two types of blood vessels that are found in the body.
Arteries carry oxygenated whereas veins carry deoxygenated blood.
The pulmonary vein contains the least carbon dioxide
The hepatic portal veins contain the most glucose after a meal
The pulmonary artery contains the least oxygen
The Renal Vein contains the least urea
The aorta Contains blood at the highest pressure.
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How do the wind, water, animals, and ballistic mechanisms aid in the pollination and seed dispersal of plants?
When fruits with less-than-sturdy seed coats allowing the seeds to disperse effectively. When fruit falls to the ground, additional forces like water, wind, birds, or animals may carry it and aid in the dispersal of seeds.
What is pollination and examples?Pollination is the movement of pollens from stamens, which are the components of flowers that create them, to the organs that contain ovules or to the oocyte (precursors of seeds), themselves. Pollen is just captured in a drip of fluid generated by the ovule in plants with exposed ovules, such as coniferous trees and cycads.
Where does pollination occur?Either the same crop or a different plant is pollinated. Pollinating animals including birds, bees, bats, caterpillars, moths, beetle, and other creatures, as well as the wind, transfer pollen within flowers or transport it from one bloom to another during the pollination process.
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FILL IN THE BLANK. ____________, which is secreted by ___________ cells, is necessary for vitamin b12 absorption.
Intrinsic factor, which is secreted by the parietal cells, is necessary for vitamin b12 absorption.
Function of vitamins B12 in parietal cellsVitamin B12 is essential for many metabolic processes, including the production of red blood cells and DNA synthesis, as well as the proper functioning of the nervous system.
Intrinsic factor is a glycoprotein produced in the stomach that binds to vitamin B12 and helps it to be absorbed in the small intestine. Without intrinsic factor, the body is unable to absorb vitamin B12, leading to a deficiency and a range of health problems.
Therefore, it is clear that intrinsic factor is necessary for vitamin B12 absorption, and without it, the body would not be able to utilize this essential nutrient.
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a plant species, such as the giant sequoia, has high mortality early in life. however, if a tree reaches a certain age, it will likely live a long life. which type of survivorship curve does this illustrate?
The type of survivorship curve illustrated by a plant species such as the giant sequoia, with high mortality early in life but a long life expectancy once a tree reaches a certain age, is known as Type I survivorship.
Type I survivorship curves are characterized by a sharp decrease in mortality early in life, followed by a relatively flat curve, indicating that the probability of death is relatively constant over the remainder of the organism's lifespan.
In the case of the giant sequoia, the high mortality early in life is due to the species’ slow growth rate and highly competitive environment. Young trees have less access to resources and need to compete with other plants for light and water. This competition, combined with the effects of drought, disease, and predation, can lead to high rates of mortality early in life.
However, if a giant sequoia is able to survive the first few years, it is likely to experience relatively low mortality over the remainder of its life. This is because the species is very long-lived, typically living for up to 3,000 years, and is also able to reach towering heights of over 300 feet. This combination of longevity and size allows the trees to reach heights that allow them to outcompete other plants for resources, providing them with a competitive advantage.
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muscles inserts into the medial aspect of the base of the proximal phalanx of the 2nd toe and its extensor expansion?
1st dorsal interosseous muscles inserts into the medial aspect of the base of the proximal phalanx of the 2nd toe and its extensor expansion.
According to human anatomy, the interphalangeal joints of the index, middle, and ring fingers, as well as the metacarpophalangeal joints, can extend and flex thanks to the four muscles collectively known as the dorsal interossei (DI). They also assist in separating the fingers from the centre of the hand (ray of middle finger). There are four dorsal interossei on each hand. They are distinguished from the palmar interossei, which are located on the anterior side of the metacarpals, by the term "dorsal." The metacarpal bone is one of the two adjacent metacarpal bones from which each bipennate dorsal interosseous muscle that is implanted in the finger emerges.
The complete question is:
Which of the following muscles inserts into the medial aspect of the base of the proximal phalanx of the 2nd toe and its extensor expansion.
a. 2nd dorsal interosseous
b: 1st plantar interosseous
c: 1st dorsal interosseous
d. 2nd plantar interosseous
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place the following important hominin fossils in chronological order, from oldest to most recent.
The following important hominin fossils are in chronological order, from oldest to most recent.
Krapina Neandertal cranium.
modern human skulls from Lake Mungo.
early modern H.sapiens "Cro-Magnon Man"
Kennewick Man.
A fossil is any preserved trace, imprint, or proof of a once-living entity from a past geological era. Exoskeletons, bones, shells, impressions of animals or microbes in stone, objects preserved in amber, hair, petrified wood, and DNA traces are a few examples. The collection of all fossils is known as the fossil record.
Paleontology is the study of fossils, including their age, formation method, and evolutionary significance. A specimen is normally considered to be a fossil if it is older than 10,000 years. The earliest fossils are 3.48 to 4.1 billion years old. The revelation that different fossils were connected to specific rock layers in the 19th century led to the establishment of a geological timeline and its related.
The complete question is:
Place the following important hominin fossils in chronological order, from oldest to most recent.
1. Kennewick Man
2. Krapina Neandertal cranium
3. early modern Homo sapiens "Cro-Magnon Man"
4. modern human skulls from Lake Mungo, Australia
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serotonin is best described as group of answer choices a feel good hormone a neurotransmitter that mimics an opioid receptor a neurotransmitter a neurotransmitter that impacts gaba
Answer: A neurotransmitter that impacts GABA
Explanation: Serotonin modulates GABA. It generally enhances GABA, therfore having an inhibitory function.
why are there fewer trna anticodons than the 61 needed to match each mrna codon that codes for an amino acid?
There is some flexibility in pairing between the 3' base of the codon and the 5' base of the anticodons.
The typical genetic code uses fewer than 61 transfer RNAs to convert 61 codons into 20 amino acids (tRNAs). This is made feasible by the tRNA's capacity to "wobble" at the third nucleotide in order to decode several codons. Although the anticodon-codon mapping of tRNA to mRNA is a need for some codon usage indices and can help us understand the development of different genetic codes, such assays are frequently too expensive and complex to detect experimentally. Instead, using the wobble laws and theoretical deductions about nucleotide binding, the codon reading is approximated. Unfortunately, all of the subtleties of codon reading are not covered by these principles. This study examines the tRNAs' ability to read codons and how evolution has affected codon usage
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what type of structures are seen when a species displays a feature that would normally only be found in its ancestors (e.g. human tail) as a result of the expression of a gene that is normally not expressed?
Orthologs are genes that, in numerous species that split from a common ancestor gene through speciation, have retained the same function over the course of evolution.
The alternative form or variations of a gene are referred to as "alleles." One allele for each autosomal gene is inherited from each parent, and we frequently categorise the alleles. They are typically referred to as wild-type, mutant, aberrant, or normal alleles.
In a word, orthologs are genes found in numerous organisms that are their exact evolutionary analogues. Orthologs were passed down through speciation in contrast to paralogs, which are genes within the same organism that developed through gene duplication [6, 3, 2].
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what is extinction? what evidence do we have that some species have become extinct? what are some factors that can lead to extinction events? why would they potentially lead to extinction events?
__ attached to proteins, stick out from the plasma membrane to define the cell's characteristics and help identify chemical signals. Might help fighting cells to recognize and attack a potentially harmful cell.
Carbohydrate groups attached to proteins, stick out from the plasma membrane to define the cell's characteristics and help identify chemical signals.
Carbohydrate groups are present only on the outer surface of the plasma membrane and are attached to proteins, forming glycoproteins, or lipids, forming glycolipids.Carbohydrates are divided into four major groups based on the degree of polymerization: monosaccharides, disaccharides, oligosaccharides, and polysaccharides.Carbohydrates are probably the most abundant and widespread organic substances in nature, and they are essential constituents of all living things. Carbohydrates are formed by green plants from carbon dioxide and water during the process of photosynthesis. Carbohydrates serve as energy sources and as essential structural components in organisms; in addition, part of the structure of nucleic acids, which contain genetic information, consists of carbohydrate.
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PLEASE HELP!!! Mitosis and Meiosis in fruit flies and humans. For each stage of mitosis and meiosis, the number of cells, number of chromosomes in each cell, number of homologous pairs in each cell, and diploid or haploid number. Chart in screenshot.
The number of chromosomes during mitosis of a fruit fly is 8 while in human cells, there are 46 chromosomes during mitosis and 23 chromosomes during meiosis
What is Mitosis and MeiosisMitosis is a type of cell division that produces two identical daughter cells from a single parent cell. It is a process by which a cell replicates its genetic material and divides into two daughter cells. During mitosis, the chromosomes in the nucleus are duplicated, and the nucleus divides into two daughter nuclei. This process of mitosis is responsible for the growth and development of organisms, as well as for the maintenance of tissue.
Meiosis is the process of cell division that produces reproductive cells (gametes) with half the number of chromosomes as the parent cell. During meiosis, the chromosomes in the nucleus are duplicated and then split into four daughter cells. This process of meiosis is responsible for the formation of eggs and sperm, and is essential for sexual reproduction.
In this question, we need to determine the mitosis in fruit files as well as mitosis and meiosis in human cells
Table 1
Fruit Flies
Mitosis:
Number of Cells: 2
Number of Chromosomes in Each Cell: 8
Number of Homologous Pairs in Each Cell: 4
Diploid or Haploid Number: Diploid
Meiosis:
Number of Cells: 4
Number of Chromosomes in Each Cell: 4
Number of Homologous Pairs in Each Cell: 2
Diploid or Haploid Number: Haploid
Table 2
Humans
Mitosis:
Number of Cells: 2
Number of Chromosomes in Each Cell: 46
Number of Homologous Pairs in Each Cell: 23
Diploid or Haploid Number: Diploid
Table 3
Meiosis:
Number of Cells: 4
Number of Chromosomes in Each Cell: 23
Number of Homologous Pairs in Each Cell: 11
Diploid or Haploid Number: Haploid
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Check the picture.
Water has formed from condensation.
This water comes from what PROCESS?
Answer:
transpiration.
Explanation:
Transpiration is a process that involves loss of water vapour through the stomata of plants.
6.how are we able to distinguish between the hba beta globin allele and the hbs alleles in our lab exercise?
The mutation in the beta-globin allele into the sickle cell allele can be detected by Denaturing gradient gel electrophoresis or DGGE.
It uses electrophoresis to find single base alterations in a DNA segment. Double-stranded DNA is subjected to an increasing denaturing environment in a denaturing gradient acrylamide gel and will melt in distinct regions known as "melting domains." These domains' melting point (Tm) varies depending on the sequence.
The DNA will partially melt when the lowest melting domain's Tm is reached, resulting in branched molecules. DNA loses some of its mobility in a polyacrylamide gel when it partially melts. The presence of a mutation will change the DNA's melting profile when compared to wild type because the Tm of each melting domain is sequence-specific. DNA with mutations will experience mobility shifts at various locations in the gel compared to the wild type. If the fragment completely loses its genetic makeup, migration once more depends on size.
Hence, difference in normal and mutant DNA sequence can be observed in gel.
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How do the herbaceous and woody plants differ in their stem structures and growth patterns?
Woody plants possess stems that last for a number of years and continually expand (in height and breadth). Woody plants can be categorized as trees, shrubs, or vines, and their leaves can be deciduous, semi-evergreen.
What does it mean when a plant is herbaceous?Herbaceous plants lack an above-ground, permanent wooden stem. They are categorized as annuals, biennials, or perennials based on their life cycle. On remedied soils, native herbaceous plants often colonize and have the potential to be used in phytoremediation removing heavy metals.
Is lavender woody or herbaceous?Although lavender grows like an everlasting shrub and has the potential to form relatively woody branches that last for years, it is nevertheless classified as a herbaceous perennial plant. However, due to its application in making essential oils and gourmet endeavors, it is plainly regarded as a herb.
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There is a total of___alleles in this population. there are____alleles in the population.
In this population, there are 8 different alleles altogether. In the general population, there are 5F alleles.
What are examples and alleles?For instance, the same trait, eye color, is determined by two alleles that, respectively, code either black eyes & brown eyes. All of an object's alleles together make up its genotype. A person's genotype is referred to as homozygous if a group of genotypes are similar to one another.
What does an effective allele go by?Dominant describes the relationship between two genetic variations. An adolescent inherits one of each of the two alleles for each gene from each parent. If the polymorphisms of a gene be diverging, only one allele—the dominant gene—will be translated.
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7) What is the purpose of this exchange of genetic material during crossover? Why is it important?
The exchange of genetic material during crossover, also known as recombination, is a process that occurs during meiosis, the process of cell division that produces eggs and sperm cells. During meiosis, genetic material from the mother and father is combined in the offspring. This process is important because it increases the genetic diversity of the offspring, which can help the organism adapt to changes in its environment.
Crossover occurs when homologous chromosomes, which are pairs of chromosomes that contain similar genetic information, exchange pieces of DNA during meiosis. This exchange of DNA creates new combinations of genetic material that were not present in the mother or father.
Overall, the purpose of crossover is to increase the genetic diversity of the offspring, which can increase the chances of survival and reproduction in a changing environment. Crossover is therefore an important process that helps organisms adapt and evolve over time.
The purpose of this exchange of genetic material during crossover to vary the programming of a chromosome or chromosomes from one generation to the next.
Crossover is a cellular process that occurs when chromosomes of the same type are joined together during meiosis. When two chromosomes (one from the mother and one from the father) meet, parts of the chromosome can be swapped. Although the two chromosomes contain the same genes, they may have different gene shapes.
Let's say that the gene shape from the mother can be transferred to the father's chromosome and vice versa .This is a very interesting and important biological activity. Different combinations of different genotypes can then be passed on to offspring. This genetic variation helps increase species diversity. Diversity also enhances a species' ability to respond to its changing environment over time, thereby evolving.
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Please help, this is basic 7th grade science.
1. Before a big soccer game...
2. Human sweat when they get hot
3. my cat lulu giving birth....
4. number of cells increase as humans grow...
5. birds flying....