Answer:
D: space
Explanation:
because it is being reflected it is just moving from where it came from, and if not its goes off of earth.
Difference between Bush fallowing and shifting cultivation
the Bush fallowing agriculture system is used when there is more than 33 % of available and arable and temporarily use land is cultivated . Shifting cultivation takes place when less than 33 % of land is cultivated in one year.
after reproductive cells combine, a new cell, called a zygote, is created. in the case of an oak tree, how many chromosomes will the zygote have? why?
In the case of an oak tree, the zygote will have twice the number of chromosomes as the reproductive cells that combined to create it.
What is Chromosomes?
Chromosomes are long, thread-like structures composed of DNA and proteins that are located inside the nucleus of a cell. They carry genetic information in the form of genes, which are segments of DNA that code for the production of specific proteins.
This is because oak trees, like many other plants, exhibit a phenomenon called alternation of generations, where they have two distinct stages in their life cycle: the haploid gametophyte stage and the diploid sporophyte stage.
The gametophyte stage produces haploid reproductive cells, such as pollen and eggs, that contain half the number of chromosomes (n) as the sporophyte cells. The sporophyte stage produces diploid cells, such as the zygote, that contain the full complement of chromosomes (2n).
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Use the chemical equations above to answer the following questions
These are equations that represent chemical reactions using chemical formulae and symbols. In a chemical equation, the reactants are represented on the left and the products are on the right.
Which two kinds of chemical equations are there?These are the top 5 categories of chemical reactions: Combination reaction. reaction of decomposition. Reaction in combination. Any reaction wherein two or even more reagents combine to generate a single result is known as just a group of compounds.
Which are the three reactants in photosynthesis?For photosynthesis to occur, sunlight, carbon dioxide, and water are required as the initial reactants. After photosynthesis is complete, it produces molecules containing carbohydrates, most typically glucose, and releases oxygen into the atmosphere. These sugar molecules hold the energy needed for survival.
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In fruit flies, grey color is dominant over black color and normal sized wings are dominant over vestigial wings. Suppose a true breeding line of grey fruit flies with vestigial wings is mated with a true breeding line of black fruit flies with normal wings. The F1 generation is then crossed. Draw a Punnett square to show the genotypes of the F2 generation, and give the phenotypic ratio for the F2 generation.
The phenotypic ratio is: 9 grey normal : 3 black normal : 3 grey vestigial : 1 black vestigial.
Phenotypic ratio is the ratio of different observable traits or physical characteristics (phenotypes) in a population or offspring resulting from a particular genetic cross or breeding.
The parental genotypes are:
Grey (GG) with vestigial wings (vv): GGvv
Black (gg) with normal wings (VV): ggVV
The F1 generation will all be heterozygous for both traits (GgVv).
The Punnett square(See Table) for the F1 cross is:
So, the genotypic ratio of the F2 generation is:
1 GGVV : 2 GGVv : 1 GgVV : 2 GgVv : 1 ggVV : 2 ggVv : 1 ggvv
And the phenotypic ratio is:
9 grey normal : 3 black normal : 3 grey vestigial : 1 black vestigial.
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Which event must occur before nucleoutides can be added to a new dna strand replication?
The DNA double helix must first be "unzipped" or split into two single strands during replication before nucleotides can be added to a new DNA strand.
What is required prior to DNA replication?The first two steps of DNA replication are initiated sequentially. The two DNA strands are then pulled apart by a protein called helicase, which binds to and dissolves the hydrogen bonds connecting the bases on the DNA strands.
What are the procedures for starting DNA replication?The total process of initiation can be broken down into four phases: identifying the replication origins, putting together the pre-replication complexes, activating the replicative DNA helicase(s), and loading the replicative enzymes.
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3 real-world examples of homeostasis
Name the organ/structure labeled with the number 13.
Answer:
Explanation:
put the picture of the question ty
True or False? All three types of heat transfer (conduction, convection, and radiation) require matter to transfer heat. True Falsc
Answer:
False
Explanation:
In which of the following animals are the blood and the interstitial fluid considered to be the same body fluid?
A grasshoppers
B fishes
C sparrows
D dogs
E jellyfish and cnidarians
In grasshoppers blood and the interstitial fluid are considered to be the same body fluid as they have a open circulatory system.
A is the correct answer.
The open circulatory system is a type of circulatory system in which the cells actively bathe in blood. It is a distinguishing trait of arthropods and mollusks. Grasshoppers have an open vascular system and are arthropods. The heart pumps blood into open-ended arteries in the open circulatory system.
As a result, blood and interstitial fluid are not distinct and are referred to jointly as hemolymph. The hemolymph exits the blood vessels and enters the large spaces known as sinuses. The hemolymph bathes their body tissues. In arthropods, the heart has openings that enable hemolymph to enter.
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Whats the answer ??????
Two nomenclature systems are used to name amino acids: The classic one using triplets and the modern one using a single letter. option is C) A W Q L N.
How to name amino acids?
There are two nomenclature systems to name amino acids.
1) the classic one uses three letters -the triplet- to represent a single amino acid.
When constructing the polymer, triplets are separated by dashes. In this representation, the primary structure of the molecule begins with the amino-terminal extreme (N) and finishes with the carboxy-terminal extreme (C).
Each triplet is a codon that codes for an amino acid.
- There is a start codon (ATG) that codes for Methionine. This is always the first amino acid to be added to the chain.
- There are three different stop codons (UAA, UAG, UGA) that indicate where the protein synthesis must stop.
2) The modern system uses a single letter to identify each amino acid.
When representing the primary structure of the molecule, these letters do not need to be separated by dashes. The amino-terminal extreme (N) is located on the left, while the carboxy-terminal extreme (C) is located on the right of the molecule, just as in the other system.
In the exposed example,
Codon Amino acid (classic system) Amino acid (modern system)
GCA Ala A
UGG Trp W
CAG Gln Q
UUA Leu L
AAU Asn N
According to this table, the correct option is C) A W Q L N
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1. After examining the DNA fingerprint of the victim and then the seven suspects, which
suspect committed the crime? How did you determine this?
2. When looking at the DNA fingerprints for the sets of twins, write “identical” or “fraternal”
next to the corresponding sets of letters:
AA
BB
CC
DD
3. How did you determine which twins were fraternal and which were identical?
4. Make up a mystery. Write a crime story using the information in this lab activity (1 page
minimum; write 1.5+ pages for full credit). Give names to the suspects and develop a
mystery plot, solving it including who you discovered as the criminal in this lab. Make
sure your story includes detailed description and dialogue between characters.
1. DNA evidence alone is not always sufficient to determine guilt or innocence, and any determination of criminal responsibility requires a thorough and fair legal process.
2. Identical: AA, CC; Fraternal: BB, DD
3. Identical twins come from a single fertilized egg that splits into two, while fraternal twins come from two separate eggs that are fertilized by two different sperm. Identical twins will have identical DNA fingerprints, while fraternal twins will have similar but not identical fingerprints. The only way to definitively determine whether twins are identical or fraternal is through genetic testing.
4. Detective Jane Smith is on the case to solve a robbery at a local jewelry store. The owner claims a valuable diamond ring was stolen.
There are three suspects: John, Sarah, and Mike, all former employees of the store. Jane investigates and takes DNA samples from the crime scene and from the suspects. After analyzing the DNA fingerprints, she discovers that the DNA from the crime scene matches Sarah's DNA. When confronted, Sarah admits to stealing the ring because she needed money to pay off her gambling debt. Sarah is arrested, and the ring is returned to the store owner.
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In layers of rock, the rock on the bottom layer is what?
Answer:
According to the Principle of Superposition (as stated in search result [10]), in an otherwise undisturbed sequence of sedimentary strata , or rock layers, the layers on the bottom are the oldest. Therefore, in layers of rock, the rock on the bottom layer is the oldest.
Answer:
The rock on the bottom layer of a rock formation is usually the oldest, as it was formed first and then covered by subsequent layers of rock over time. This is due to the principle of superposition, which states that in an undisturbed sequence of layers, the oldest layer is at the bottom and the youngest layer is at the top.
how does recrystallization relate to the cycling of earths materials and the flow of energy that drives it?
Geological processes like deformation and metamorphism, which are fueled by pressure and heat in the Earth's interior, can lead to recrystallization.
what do we mean by geological features ?the study of the earth's dynamics and physical history, the rocks that make up its surface, and the physical, chemical, & biological changes the earth has through or is undergoing. the examination of this science.
The four geological features are-
The four main geological processes are deposition, erosion, weathering, and mantle convection currents.
Geological processes like deformation and metamorphism, which are fueled by pressure and heat in the Earth's interior, can lead to recrystallization.
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after being exposed to online learning and other social media platforms during the lockdown, assess how you will now prepare to meet the demands of career during the digital age (4th industrial revolution)
(6)
After being exposed to online learning and other social media platforms during the lockdown, Continuous learning and upskilling will help you stay relevant in the job market.
How do you prepare?The COVID-19 pandemic has accelerated the shift towards the digital age and the Fourth Industrial Revolution, and as a result, it has become essential to prepare oneself to meet the demands of the new digital era.
The digital age demands advanced technical skills such as coding, digital marketing, data analytics, and cloud computing. Continuous learning and upskilling will help you stay relevant in the job market.
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Why would it be harder to deprive someone of just NREM sleep than just REM sleep?
Explanation:
During REM sleep, your eyes move around rapidly in a range of directions, but don't send any visual information to your brain.That doesn't happen during non-REM sleep.
More information
It is harder to wake someone up when their in NREMREM reports are typically rated as more intense, bizarre, perceptually vivid, emotional and kinesthetically engaging [8,11,14] than non-REM reports, which are typically more thought-like and conceptual [16,18].(I just thought that the extra information would help)
(By the way could you mark me as brainliest?)
how does garbage in the ocean harm sea creatures
Answer:
Marine mammals can become entangled in or ingest plastic debris, causing suffocation, starvation, and drowning.
Explanation:
It is estimated that up to 13 million metric tons of plastic ends up in the ocean each year—the equivalent of a rubbish or garbage truck load’s worth every minute. Fish, seabirds, sea turtles, and marine mammals can become entangled in or ingest plastic debris, causing suffocation, starvation, and drowning.
Answer:
Ingestion: Animals can easily mistake plastic debris for food.
Explanation:
Animals can choke, sustain internal injury and die – or starve by thinking they’re full from eating plastic.
You obtain a sample of single-celled amoebas and put them into different
solutions. The hypotonic solution you place your amoebas into would have
more or fewer or the same amount of solutes as your amoeba?
Your amoeba would contain fewer solutes than the hypotonic solution you put it in. When the solute concentration in a hypotonic solution is lower than that of the cell, more water molecules outside the cell than inside it.
What is hypotonic solution with example?Hypotonic solutions are those with lower solute concentrations than the cell. Solutions are created by mixing a solute with a solvent. The solute is the component that is present in lower amounts, whereas the solvent is present in higher amounts. An illustration of a hypotonic solution is salt water.
Which fluid is hypotonic solution?The term "hypotonic saline" refers to an intravenous solution used by doctors that has a sodium content that is lower than what is typically seen in human serum.
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What are the answerssssssss
The type of asexual reproduction in the first image is Binary fission. The type of asexual reproduction in the second image is of parthenogenesis.
What is asexual reproduction?Asexual reproduction is a type of reproduction in which offspring are produced without the involvement of gametes (reproductive cells) from two different individuals. In asexual reproduction, a single organism can produce offspring that are genetically identical or nearly identical to the parent.
There are several different mechanisms of asexual reproduction, including budding, fragmentation, and parthenogenesis. In budding, new individuals grow and develop from a small outgrowth or "bud" on the parent organism. In fragmentation, the parent organism breaks into smaller pieces that each develop into a new individual. In parthenogenesis, an egg cell develops into an embryo without being fertilized by sperm.
Asexual reproduction is common in many types of organisms, including bacteria, protists, fungi, and some plants and animals. It can be advantageous in stable environments where the parent organism is well-suited to its environment and can produce many genetically identical offspring quickly and efficiently. However, asexual reproduction can also limit genetic diversity and make populations more vulnerable to environmental changes or disease.
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Digestion begins in the mouth. Which of the following statement is INCORRECT?
The tongue aids in the digestion of the food.
The saliva changes some of the starches in the food to sugar.
The tongue keeps the food in place in the mouth
while the food is being chewed.
The digestive juices can react more easily with the food when chewed.
Digestion begins in the mouth. All of the statements are correct. The tongue aids in the digestion of food by moving the food around the mouth and helping to mix it with saliva.
Digestion is the process of breaking down food into smaller molecules that can be absorbed and used by the body. Saliva contains enzymes that change some of the starches in the food to sugar, which begins the process of breaking down the carbohydrates in the food. The tongue also helps to keep the food in place in the mouth while it is being chewed, which allows for more efficient grinding and mixing of the food with saliva. Finally, chewing breaks down the food into smaller pieces, which makes it easier for the digestive juices to react with the food and begin the process of digestion.
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50PTS: In the vegetable selection of a grocery store, there are many familiar vegetable, such as Brussels sprouts, cauliflower, broccoli, kale, and kohlrabi. It may be surprising to learn that all these vegetables are varieties of the same species. They are the result of genetic manipulation through a process called artificial selection. Instead of using the latest gene splicing techniques, artificial selection uses selective breeding to select for desired traits. Over 2500 years ago, farmers started keeping Brassica oleracea with traits they desired. They grew these plants and kept the seeds from the most desirable plants. Overtime, after repeating this process, they were able to reliably grow plants with the desired traits. This diagram is a model that shows some of the variations of the wild Brassica oleracea.
1. Explain how selective breeding takes advantage of naturally occurring variation. Use evidence from the passage and the diagram to support your explanation.
2. Describe the DNA in a cauliflower plant is similar to and different from the DNA in Brussels sprouts.
3. Broccoli looks very different from the wild Brassica oleracea. Is broccoli a transgenic plant? Explain your answer.
Answer:
1. Selective breeding takes advantage of naturally occurring variation by selecting and breeding individuals with desirable traits. In the case of Brassica oleracea, farmers selectively bred plants with larger leaves, flower buds, or stems that eventually led to the development of the different vegetable varieties we have today. The passage explains that farmers kept seeds from the most desirable plants and planted them, which allowed for the desired traits to become more prominent in the next generation. The diagram shows the variations in the wild Brassica oleracea and how they have been selectively bred to produce different vegetable varieties. This process of selective breeding takes advantage of natural genetic variation, allowing for the cultivation of plants with specific traits desired by humans.
2. The DNA in a cauliflower plant is similar to and different from the DNA in Brussels sprouts. Both cauliflower and Brussels sprouts belong to the same species, Brassica oleracea, and therefore share a lot of their DNA. However, each vegetable variety has undergone selective breeding, resulting in differences in their DNA that code for specific traits. For example, the DNA that controls the formation of flower buds in Brussels sprouts may be different from the DNA that controls the formation of the dense flower head in cauliflower. Additionally, the two vegetables may have different versions of genes that control similar traits, resulting in slight genetic differences.
3. Broccoli is not a transgenic plant. Transgenic plants are those that have had their DNA artificially modified by inserting genes from other organisms. Broccoli, along with other Brassica oleracea varieties, was produced through selective breeding, which involves selecting and breeding plants with desirable traits from within the same species. While broccoli looks very different from the wild Brassica oleracea, its genetic makeup is still largely the same as the original plant, with genetic modifications occurring through selective breeding over many generations rather than through artificial gene insertion.
why are cells often compared to factroies
Answer:
Cells are often compared to factories because they both involve a complex system of specialized parts working together to carry out specific functions. Just as a factory is made up of different departments and machines that work together to produce goods, a cell is made up of different organelles and molecules that work together to carry out various functions necessary for life.
Overall, comparing cells to factories is a useful analogy for understanding the complex and organized nature of cellular processes.
Select the correct answer from each drop-down menu.
A neuron has three basic parts: the dendrites, the cell body, and the axons. Some neurons have a fatty layer covering called
around their axons. This layer isn’t continuous, and the gaps are called
. The action potential jumps through these gaps to
the transmission.
Answer:
1. Myelin Sheath
2. Nodes of Ranvier
3. Regenerate
Explanation:
Somatic sensory neurons carry information for all of the following EXCEPT for:
a. Thermal information
b. Initiating movement
c. Mechanosensation
d. Pain
Answer: D - Pain
Explanation:
Answer:
B. Initiating movement
Explanation:
Somatic sensory neurons carry information for all of the following EXCEPT for initiating movement. The functions listed are as follows:
a. Thermal information: Somatic sensory neurons carry information about temperature, such as heat or cold, through thermoreceptors.
b. Initiating movement: Initiating movement is not a function of somatic sensory neurons. Rather, it is controlled by motor neurons.
c. Mechanosensation: Somatic sensory neurons carry information about mechanical stimuli, such as touch, pressure, and vibration, through mechanoreceptors.
d. Pain: Somatic sensory neurons also carry information about pain, through nociceptors.
pls help!!! brainliest!! Explain how understanding an animal’s systems can help agricultural production.
Answer:
Understanding an animal’s systems can help agricultural production by improving efficiency and sustainability. An animal production system that delivers the best outcome would be environmentally sound, economically viable, and socially acceptable. Farm animals contribute not only a source of high-quality food that improves nutritional status but also additional resources such as manure for fertilizer, on-farm power, and other by-products. This can provide economic diversification and risk distribution for farmers.
Explanation:
In addition, understanding an animal's systems can help optimize animal health and welfare, which in turn can improve production efficiency. By understanding the animal's digestive system, for example, farmers can design appropriate feeding programs and ensure that the animals are getting the nutrients they need to thrive. Understanding an animal's reproductive system can help farmers improve breeding programs and increase the production of offspring with desirable traits. By monitoring an animal's health and behavior, farmers can detect and prevent diseases and other health problems before they become widespread.
Moreover, understanding an animal's systems can also help farmers reduce their environmental impact. For example, by understanding the animal's excretory system, farmers can design more effective waste management systems that reduce the amount of manure and other waste products that enter the environment. This can help prevent pollution and promote the sustainable use of natural resources.
In summary, understanding an animal's systems is crucial to improving agricultural production by enhancing efficiency, sustainability, animal health and welfare, and reducing environmental impact.
What is nondisjunction? Explain how nondisjunction can occur in meiosis and mitosis.
Nondisjunction is a type of chromosomal mutation that occurs when chromosomes fail to separate properly during cell division, resulting in an unequal distribution of chromosomes into daughter cells. As a result, some cells end up with an extra chromosome, while others are missing a chromosome.
Nondisjunction can occur in both meiosis and mitosis. In meiosis, nondisjunction can occur during the first division (meiosis I) or the second division (meiosis II). If nondisjunction occurs during meiosis I, the resulting gametes will have an extra or missing chromosome. For example, if a pair of homologous chromosomes fails to separate during meiosis I, one gamete will receive both copies of the chromosome, while the other gamete will receive none. If nondisjunction occurs during meiosis II, the resulting gametes will have an extra or missing chromatid.
In mitosis, nondisjunction can occur during the separation of sister chromatids, resulting in one daughter cell having an extra chromosome and the other having a missing chromosome.
Nondisjunction can lead to genetic disorders such as Down syndrome, Turner syndrome, and Klinefelter syndrome. These disorders are caused by an abnormal number of chromosomes in the affected individual's cells.
4. Cystic fibrosis is a homozygous recessive condition that affects 1 in 10,000 of the Hispanic population
in the United States. Calculate the frequency of the dominant allele, the frequency of the recessive allele, and the percentage of heterozygous individuals (carriers) in the Hispanic population.
Frequency of the dominant allele Frequency of the recessive allele
% homozygous dominant
% homozygous recessive
% heterozygous
The frequency of the dominant allele is 0.99, the frequency of the recessive allele is 0.01, and the percentage of heterozygous individuals (carriers) in the Hispanic population is 1.98%.
What is Frequency?
Frequency refers to the number of occurrences of a particular event or phenomenon in a given unit of time or space. In genetics, frequency typically refers to the number of occurrences of a particular allele or genotype in a population. For example, the frequency of a particular allele in a population is the proportion of that allele in the total number of alleles at the same locus in that population.
To calculate the frequency of the dominant and recessive alleles, we can use the Hardy-Weinberg equation:
Since cystic fibrosis is a homozygous recessive condition, we know that [tex]q^{2}[/tex]= 1/10,000, or 0.0001. We can solve for q by taking the square root of both sides:
q = √(0.0001) = 0.01
To find p, we can use the fact that p + q = 1:
p = 1 - q = 1 - 0.01 = 0.99
So the frequency of the dominant allele is 0.99, and the frequency of the recessive allele is 0.01.
To calculate the percentage of heterozygous individuals (carriers), we can use the equation:
2pq * 100%
where 2pq represents the frequency of heterozygous individuals. Plugging in our values, we get:
2pq = 2(0.99)(0.01) = 0.0198
So the percentage of heterozygous individuals in the Hispanic population is:
0.0198 * 100% = 1.98%
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Which of the following can you conclude from Beauchamp's study of flock sizes islands and mainlands? a.The costs of group living are higher on mainlands b.The net benefit of group living is higher on mainlands c.The benefits of group living increase with flock size d.The benefits of group living are identical on islands and mainlands
Beauchamp's study of flock sizes islands and mainland concluded that the benefits of group living are identical on islands and mainlands.
D is the correct answer.
In line with the island syndrome, Beauchamp (2021) published a worldwide meta-analysis that found that, after controlling for confounding factors such as latitude, body mass, clutch size, and breeding system, avian survival is significantly greater on islands.
Regarding behavioural modifications, birds' propensity to create mixed flocks is lessened on islands (Beauchamp, 2004), and may even be nonexistent on islands with no predators at all.
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What does our body do to keep our body temperature constant and why
silky feathers in low is recessive to that for normal feather. (a) ll 60 birds were raised from a cross between individuals that were heterozygous for gene. how many would be expected to be silky and how many normal? (b) if you had a normal feathered birds, what would be the easiest way to determine which it is homozygous or heterozygous?
Please help
Answer:
Explanation:
(a) If 60 birds were raised from a cross between individuals that were heterozygous for the gene, then according to Mendelian genetics, the offspring should segregate in a 3:1 ratio of normal to silky feathers.
To determine how many would be expected to have each phenotype, we can use a Punnett square:
L l
L LL (normal) Ll (normal)
l Ll (normal) ll (silky)
From this Punnett square, we can see that of the four possible offspring genotypes, three would result in the normal feather phenotype, and one would result in the silky feather phenotype. Therefore, we can expect 45 birds with normal feathers (3/4 of 60) and 15 birds with silky feathers (1/4 of 60).
(b) If you had a normal feathered bird, you could determine whether it is homozygous or heterozygous for the gene by crossing it with a known homozygous recessive bird (ll). If the normal feathered bird is heterozygous (Ll), then half of its offspring should have silky feathers (ll) when crossed with the homozygous recessive bird (ll). If the normal feathered bird is homozygous (LL), then all of its offspring should have normal feathers (Ll) when crossed with the homozygous recessive bird (ll). By analyzing the phenotype of the offspring, you can determine whether the normal feathered bird is homozygous or heterozygous for the gene.
Response to its environment (nervous system? sense organs? special adaptations?)
african bush elephant...... can I get some help?
A variety of adaptations and skills enable the African bush elephant to adjust to its surroundings and thrive in its natural habitat.
What adaptations do African bush elephants make to their surroundings?Elephants have huge bodies, which help them regulate their body temperature in the scorching sun, dig for water with their tusks, and use their trunks to grasp branches and other objects.
What sensory reactions does an elephant have to its surroundings?Elephants can smell water sources up to 19.2 km (12 mi) distant thanks to their excellent sense of smell. At the apex of the trunk are the nostrils, which are used for breathing, smelling, and pulling in water to squirt into the mouth.
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