Answer: by adding heat to ice.
Explanation: The three states of matter are solid, liquid and gas. Ice is water in solid state. When ice is heated, it melts and changes from solid state to liquid state. When more heat is applied to water in its liquid state, it boils and changes to vapour which is gas. Water vapour exists in gaseous state.
Water can exist in three states of matter: solid, liquid, and gas. Adding heat energy to ice causes it to melt and become water.
Explanation:Water is indeed a remarkable substance, capable of transitioning between its three fundamental states of matter: solid, liquid, and gas. The transformation from a solid state, represented by ice, to a liquid state, commonly referred to as water, is known as "melting." This transition is brought about by the infusion of heat energy into the ice, which causes its molecular structure to break free from the solid lattice and transition into the more fluid, mobile state of liquid water.
Moreover, water's versatility extends to its ability to undergo another vital phase change: from liquid to gas. This phenomenon, termed "vaporization," involves the absorption of additional heat energy, which imparts sufficient kinetic energy to water molecules to enable them to escape the liquid's surface and transform into water vapor. This process of evaporation is integral to many natural phenomena, including the water cycle, where water vapor rises into the atmosphere before condensing to form clouds and, eventually, returning to Earth as precipitation.
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Which pair is correct?
a. Ge phase, DNA replication
b. Ga phase, preparation for mitosis
c. S phase, cell division
d. M phase, cell growth
Answer:
answer is d as m phase = cell growth
While looking at bacteria under a microscope, you decide to take a break. When you return, the amount of bacteria has doubled in size. Your break probably only took _____.
24 hours
1-3 hours
8 hours
48 hours
The correct answer is 1-3 hours.In ideal laboratory conditions, some types of bacteria can double in size in as short as 20 to 30 minutes. Therefore, the break probably only took 1-3 hours for the bacteria to double. This doubling time leads to a J-shaped exponential growth curve, which can vastly increase the bacterial population over a short period.
When observing bacterial growth under a microscope, the time it takes for a bacterial population to double in size, known as the doubling time, can vary based on the environmental conditions and nutrient availability. In ideal conditions, some bacteria can double every 20 to 30 minutes, while in less favorable conditions, the doubling time might be extended to several hours. Based on the information provided, a doubling time was interpreted as relatively rapid, implying that the break taken was likely 1-3 hours, during which the amount of bacteria observed doubled.
For a bacteria culture that doubles every 30 minutes, we can calculate the growth over time. Starting with a specific number of cells, say 1 × 105 cells, after 2 hours (which is four 30-minute cycles), the population would reach 1.6 × 106 cells given that there is no cell death. This rapid growth pattern, which is common in bacteria under optimal conditions, often leads to a J-shaped exponential growth curve.
It's important to remember that these figures are theoretical and actual bacterial growth can be influenced by various factors such as nutrient availability, temperature, pH, and the immune response of the host in a real-world scenario.
Experiments and observations verify scientific laws.
True
False
Answer:
true
Explanation:
What happens when a sodium atom loses an electron in its outer energy
O
A. It becomes a negative ion
O
B. It has an increase in the number of protons.
O
C. It has an increase in the number of neutrons.
O Dit becomes a positive ion.
Answer:
The correct option is D) it becomes a positive ion.
Explanation:
The third shell of the sodium atom has one valence electron. In order to become stable, the sodium atom tends to lose its valence electron so that a stable configuration can be achieved. When a sodium atom loses an electron, the number of protons in the nucleus becomes greater than the number of electrons as one electron has been lost. As a result, the sodium atom becomes a positively charged ion with + 1 charge.
Answer:
D.) It becomes a positive ion
Explanation:
It's correct
What is the definition of Mitosis in your own words?
Final answer:
Mitosis is the division of the nucleus in eukaryotic cells, resulting in two identical daughter cells used for growth, repair, and asexual reproduction. It involves several stages and ends with cytokinesis, where the rest of the cell divides, creating two complete diploid cells.
Explanation:
Mitosis is a vital process in eukaryotic cells where the nucleus divides, leading to the production of two identical daughter cells. It is primarily used for growth, repair, and asexual reproduction. The process of mitosis has several stages: prophase, prometaphase, metaphase, anaphase, and telophase, each with critical functions to ensure accurate duplication and separation of the cell's DNA.
During mitosis, the cell's DNA and other organelles are first replicated. Then, mitotic spindle fibers, which are made of microtubules, attach to each chromosome's centromeric region. These spindle fibers align the chromosomes in the center of the cell and later pull apart the sister chromatids to opposite sides of the cell. In humans, this results in 46 chromosomes on each side of the cell. Following the division of the nucleus, cytokinesis occurs to divide the cytoplasm, resulting in two distinct diploid cells with the same genetic material as the original cell.
The ability of cells to undergo mitosis ensures that variations, such as those seen in cancer cells, can be replicated within the organism, although these variations will not be passed down to the next generation unless they occur in germ cells.
Final answer:
Mitosis is a crucial biological process wherein a single cell divides to form two identical daughter cells, each containing the same number of chromosomes as the parent cell. This process involves the copying of chromosomes, segregation of sister chromatids, and culminates in cytokinesis to produce two separate but genetically identical cells.
Explanation:
Mitosis is a process that facilitates the division of a cell's nucleus into two identical nuclei, each housing its own full set of chromosomes. This process is essential for the growth, repair, and asexual reproduction of organisms. During mitosis, the cell's chromosomes are copied and then distributed evenly to two daughter cells, ensuring that each new cell contains the same genetic information as the parent cell. Cytokinesis, often following mitosis, completes the cell division by splitting the cell's cytoplasm and its contents, thus forming two separate and independent cells. This mitotic (M) phase of the cell cycle results in the formation of two diploid daughter cells, each with its distinct nucleus and cellular structures.
In the Linnaean system, birds and reptiles are each classified in a separate class. However, in the modern system, birds are members of the
clade Reptilia. Which conclusion, based on evidence, did scientists cite to revise the classification of birds?
A Birds and reptiles have adaptations for surviving in similar habitats.
B. Birds and reptiles both rely on DNA, RNA, and the universal genetic code..
C. Birds and reptiles share many behavioral traits, such as laying eggs in nests.
D. Birds descended from the most recent common ancestor of reptiles.
Answer:
The correct option is D) Birds descended from the most recent common ancestor of reptiles.
Explanation:
The modern system of classification is based on the evolutionary history of organisms. The organisms having more common ancestors from the past stand more closely together in the evolutionary tree. The evolutionary history of the birds showed that birds originated from an ancestor which was a reptile in the past. Hence, in the modern system of classification, birds are placed as members of the clade reptiles.
Answer:
d
Explanation:
what is one characteristic of life that is not essential to the life of the organism but is necessary to its species
Answer:
The answer is reproduction.
A _____ is a sequence of 3 nucleotides within mRNA that encodes for a specific amino acid or termination sequence.
Answer: Codon
Explanation: A codon is a triplet of nucleotides in an mRNA that codes for specific amino acids. There are 64 possible codons. They are called the genetic codes. Three of these codons (UAA, UAG, UGA) do not code any known amino acid and are thus called termination codons. One of the codons (AUG) signals the beginning of translation and is thus called initiation codon.
Light-absorbing molecules such as chlorophyll are called ____________.
Question 20 options:
grana.
pigments.
stomata.
thylakoids.
Light-absorbing molecules in plants, such as chlorophyll, are called pigments, which absorb light for photosynthesis and give plants their green color.
Explanation:In the process of photosynthesis, light-absorbing molecules that absorb certain wavelengths of light and give plants their green color are called pigments .
The most common pigment is chlorophyll , found in structures like thylakoids within the chloroplasts of plant cells. Unlike pigments, 'grana' refers to stacks of thylakoids, while 'stomata' are tiny openings in the leaf's surface where gas exchange occurs. So, the correct answer is pigments .
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If these rock layers have been undisturbed, which layer is the youngest?
Answer: A
Explanation:
Answer:
I think it is A, because the rocks that are at the top are the youngest and the ones that are on the bottom are the oldest.
Explanation:
Blank is not the only factor in determining the characteristics of an Organism Environment is also a major factor
Answer:
Genes is not the only factor in determining the characteristics of an organism environment is also a major factor.
Explanation:
The organisms having the traits which are very favorable or suited in an environment have greater probability of surviving and reproducing at the higher rate than any organism which are less suited to that environment.When an organism start developing from one stage to another, the interaction of genes with the environment initiates at every moment of its life.The interaction of genes and environment determines the characteristics of that organism.Final answer:
The characteristics of an organism are influenced by both genetic and environmental factors, with abiotic and biotic components playing significant roles. Phenotypic expression can be affected by the environment, and changes in environmental conditions can lead to adaptations in organisms.
Explanation:
The environment plays a significant role in determining the characteristics of an organism, alongside genetic factors. In biology, this interplay between genetics and the environment is vital for understanding organismal traits and behaviors. Two main environmental factor categories influence organisms:
Abiotic factors: Non-living components such as sunlight, climate, soil, water, and air.
Biotic factors: Living components or those that were once living, like plants, animals, microorganisms, and their remains.
Organisms are not isolated entities; they are part of complex systems that require interaction with their surroundings to survive and thrive. The environment can affect phenotypic expression, such as in cases where sun exposure influences skin color, or temperature-dependent sex determination (TSD) can dictate the gender in some reptiles. Changes in the environment, including climate shifts or the introduction of new species, can have substantive effects on an organism's ability to maintain its population and can lead to adaptations that are essential for survival in changing conditions.
Which enzyme is responsible for facilitating the hydrogen bonding between the nucleotides in a new DNA molecule
Answer:
"DNA polymerase" is responsible for facilitating the hydrogen bonding between the nucleotides in a new DNA molecule.
Explanation:
It is an enzyme which helps in synthesis of the DNA molecules from the deoxyribonucleotides, which is considered as the base of the DNA. The enzyme s very much required for the replication of the DNA and they have been seen working in pairs so that similar strands of the DNA can be created from the single DNA molecule. DNA polymerase helps in formation of the copies of the DNA which is in form of the nucleic acid molecules.
which type of macromolecule is responsible for long term energy storage
Carbohydrates
Proteins
lipids
nucleic acids
Answer:
Lipids
Explanation:
Lipids, or fats, are the macromolecules responsible for long-term energy storage. They provide more than twice the energy per gram compared to carbohydrates and proteins, making them efficient in providing energy for longer periods of time.
Explanation:The type of macromolecule responsible for long-term energy storage is lipids. Lipids, specifically fats, are significant for long-term energy storage because they deliver more than twice as much energy as carbohydrates or proteins per gram, making it a highly efficient form of stored energy. Examples of lipids include fats, oils, and waxes. Conversely, carbohydrates are typically used for quick energy boosts, proteins for repaid and cellular function, and nucleic acids for genetic information storage.
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Agricultural technology has improved people’s quality of life. Many of the products we use come from ranches and farms that are worked using machines. Which of the following groups of products all come from some type of material raised on a ranch or farm?
Answer:
C. a cotton shirt, a book, and ice cream
Explanation:
A cotton shirt will be made from the cotton crop which is grown by agricultural technology. A book will be made up of paper. Paper comes from woods of the trees, hence it is produced from agricultural technology. Ice cream is made from dairy products which come from animals. Hence, option C is correct.
Other options, like Option A, is not correct because paperclips and plastic bags are nor manufactures from agricultural products. Plastic bags are made from polyesters and paperclips probably from any element like a metal.
water molecules evaporate from a lake near the equator and rise into the atmosphere, as shown in the diagram below. as the molecules travel away from the equator, which step in the water cycle is most likely to happen next
Condensation in the atmosphere, leading to cloud formation and potential precipitation.
As water molecules evaporate from a lake near the equator and rise into the atmosphere, the next likely step in the water cycle is condensation. As the warm, moist air rises, it encounters cooler temperatures at higher altitudes. The decrease in temperature causes the water vapor to condense into tiny water droplets or ice crystals, forming clouds. These clouds are part of the condensation process in the atmosphere.
Subsequently, if the conditions are conducive, the accumulated water droplets in the clouds may coalesce and grow, eventually leading to precipitation in the form of rain, snow, sleet, or hail. This completes the cycle as the condensed water returns to the Earth's surface, replenishing the water in lakes, rivers, and other bodies of water, and continuing the dynamic process of the water cycle.
Which geological feature is most common at oceanic-continental convergent boundaries?
Faults
Trenches
Rift Valleys
Volcanic Mountain Ranges
Trenches are geological feature is most common at oceanic-continental convergent boundaries.
Explanation:
Usually, the oceanic plate, because it is denser, becomes subducted underneath the continental plate. The enormous stress of the two colliding plates causes the plates to warp abit downwards along the boundary causing a trench to form that stretches the boundary.
As the oceanic plate gets subducted and ‘dives’ into the mantle, it begins to melt into magma. Usually, due to the enormous stress along the boundary, fissures develop on teh continental plate along teh boundary. The magma rises through these fissures and erupts at the surface. Several mountains form long the boundary forming another signature geological feature of convergent boundary which is volcanic arc mountains.
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Answer:
Explanation:
i think its volcanos
An octopus reproduces only once in its life, but it may have more than 100,000 offspring, depending on the species. Certain species of penguin, by contrast, have only one chick at a time. If some species can reproduce as rapidly as the octopus (100,000 offspring every 3 or 4 years), how is it possible that a species that has only one young at a time is equally successful?
A.
Having a large number of offspring assures that at least some of them will escape being killed by predators.
B.
An octopus only reproduces one time, but penguins may reproduce between 4 and 12 times in their lives.
C.
The success of a species depends on the number of offspring that survive long enough to reproduce.
D.
Baby penguins are left to fend for themselves from the time they hatch, so they quickly become self-sufficient.
Answer:
The correct option is C) The success of a species depends on the number of offspring that survive long enough to reproduce.
Explanation:
Some species of animals such as the octopus might give rise to many offspring, but these offspring might not survive due to different reasons. Only a few of them will be able to survive until the age where they can reproduce.
On the other hand, the survival rate of offspring which are formed in lesser numbers is more. These offspring are taken care of by their parents usually or are better adapted to live in the environment. Hence, their survival rate is more.
Answer:
The success of a species depends on the number of offspring that survive long enough to reproduce
What causes fingers to look wrinkled after soaking in water?
O
A. The skin cells lose all their water.
O
B. Salt enters the skin cells.
O
c. Water enters the cells in the skin.
O
D. The skin cells shrink in size.
SUBMIT
the answer is C. water enters the cells in the skin
a rat becomes a long tailed rat and a short tailed rat over 10000 years. What is this called ?
Answer:
Evolution
Explanation:
Evolution can be described as the changes which occur in a population over a period of time. Over a period of time, organisms tend to evolve those characteristics which make them better adapted to live in an environment. Such changes which occur over a long period of time are termed as evolution. Charles Darwin was the scientist to bring forward the theory of evolution.
The change in the tail length of a rat over a course of many years is an example of evolution.
"The process described is known as speciation.
Speciation is the evolutionary process by which new biological species arise. This can occur over long periods of time, such as the 10,000 years mentioned in the question. In the case of the rat, the original population may have been subjected to different environmental pressures, leading to genetic changes. Over time, these changes can accumulate to the point where two populations of the same species can no longer interbreed successfully, thus becoming separate species. The long-tailed and short-tailed rats in the question are examples of the resulting species after speciation has occurred. There are several mechanisms by which speciation can happen, including geographic isolation (allopatric speciation), ecological divergence (sympatric speciation), and polyploidy (especially in plants)."
Which of the following is not a component of the cell theory?
- cells are the basic unit of organization in organisms
-all living things are made of cells
-all cells contain nuclei
-all cells come from pre-existing cells
That all cells contain nuclei is NOT a component of the cell theory
Explanation:
Not all cells contain a nuclei. Cells are even categorized based on this attribute. Eukaryotic cells have a nucleus while prokaryotic cells do not. This property, therefore, cannot be used to categorize all cells. Prokaryotic cells have a nucleoid, which is not a true nucleus, but only a region in the cell where the genetic material of the cell can be found.
The other 3 choices are the universally-accepted tenets of the cell theory;
-cells are the basic unit of organization in organisms
-all living things are made of cells
-all cells come from pre-existing cells
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The cell theory states that cells are the basic unit of organization in organisms, all living things are made of cells, and all cells come from pre-existing cells. However, not all cells contain nuclei.
Explanation:In the cell theory, all of the following components are true except for the statement that all cells contain nuclei. While many cells do have nuclei, there are exceptions to this rule, such as red blood cells and some bacteria, which lack a nucleus. The other components of the cell theory are that cells are the basic unit of organization in organisms, all living things are made of cells, and all cells come from pre-existing cells.
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In a given chemical reaction, the energy of the products is greater than the ene
O
A.
Energy is absorbed in the reaction.
O
B.
Energy is released in the reaction.
O
C .
No energy is transferred in the reaction.
O D.
Energy is created in the reaction.
O
E.
Energy is lost in the reaction.
Reset
N
Answer: a reaction in which energy is absorbed from the surroundings is called an endothermic reaction
Explanation: in in document reactions the enthalpy of the products is greater than the empathy of the reactants. exothermic reactions heat up their surroundings while endothermic reactions cool them down
The correct answer is A. Energy is absorbed in the reaction, which is characteristic of an endothermic reaction where the products have higher energy than the reactants.
When the energy of the products is greater than the energy of the reactants, this indicates that energy was absorbed during the chemical reaction. Such reactions are known as endothermic reactions, where energy from the surroundings is required for the reaction to proceed. The correct option for the given question is A. Energy is absorbed in the reaction. This is because, during an endothermic reaction, energy is necessary to break the initial bonds of the reactants, and the formation of new bonds in the products does not release as much energy as it was absorbed to break the initial bonds. Therefore, the overall energy of the system increases, and this absorbed energy is reflected in the higher energy content of the products compared to the reactants.
The principal of Dominance states that
Principle of Dominance was given by Sir Gregor Johann Mendel.
Explanation:Principle of Dominance was given by Sir Gregor Johann Mendel as a conclusion of the monohybrid cross between the different characteristic pea plants. It says that in an organism which is heterozygous for a particular character, only the dominant trait is able to express as a phenotype, not the recessive one. In other words, the recessive allele is completely masked by the presence of the dominant allele. This leads to same phenotype of a homozygous dominant organism and a heterozygous organism.
To test the organism about its heterozygosity, the organism is led through a test cross where the organism is crossed with a recessive organism. If the F1 offsprings are all dominant, then the organism is homozygous dominant, and if the F1 offsprings are of half dominant and half recessive phenotype, then the organism is heterozygous.
The principle of Dominance refers to the genetic phenomenon when two different alleles are present, the dominant allele is expressed and the recessive allele is hidden. An example of this is eye color in humans where brown is dominant over blue.
Explanation:The principle of Dominance in biology is based on genetics. It states that when two different alleles are present, only one is expressed while the other is masked. This expressed allele is known as the dominant allele and the one that is hidden is the recessive allele. For example, in humans having two different alleles for eye color, one brown (dominant) and one blue (recessive), if the person carries both, they will have brown eyes as brown is the dominant trait over blue.
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Which of the following happens when a company goes public?
O
A. It gets taken over by the federal government
O
B. It starts offering its products for sale in the free market
O
C. It issues bonds that can be bought by anyone
O
D. It begins selling shares of stock in a public stock market
SUBMIT
Answer:
The company can increase its capital without going into debt.
Explanation:
PLEASE HELP ASAP!!!
To which classification levels does this scientific name "Canus nipponicus" belong?
A. kingdom and phylum
B. phylum and genus
C. genus and species
D. kingdom and species
Answer:
ALRIGHTY IMA HELP YA DONT WORRY!
The Answer is: C
Explanation: I dont know how to explain it lol but pretty sure im right.
The cell theory applies to___________
1
multicellular organisms.
2
all answers are correct.
3
bacteria.
4
plants and animals.
The cell theory applies to multicellular organisms, bacteria and plants and animals.
The cell theory:Cell theory is a theory that says all living organisms are made up of cells, cell is the basic structural,functional unit of all living organisms and every cell come from pre-existing cell. The cell is basic unit of reproduction also.
Viruses are not true cells. They lack the some important part of the cell i.e the protoplasm and hence the cell theory is only not applicable to viruses.
therefore, The cell theory applies to all answer are correct (option 2) is the correct answer.
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The cell theory applies to multicellular organisms, bacteria, plants and animals.
What is cell theory?Cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
Matthias Schleiden, a German botanist, and Theodor Schwann, a British Zoologist formulated the cell theory in the mid-nineteenth century.
Knowing that all living things are made up of cells allows us to understand how organisms are created, grow, and die.
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Drag the tiles to the correct locations. The tiles can be used more than once. Identify which type of reaction the feature occurs in.
Releases oxygen - Light-dependent reactions
Fixes carbon dioxide - Light-independent reactions
Takes place in the stroma - Light-independent reactions
Takes place in the thylakoid membrane - Light-dependent reactions
Releases oxygen: Oxygen is released as a byproduct during the light-dependent reactions of photosynthesis. These reactions occur in the thylakoid membranes of the chloroplasts and involve the absorption of light energy to convert water into oxygen and ATP.
Fixes carbon dioxide: The process of fixing carbon dioxide occurs during the light-independent reactions, also known as the Calvin cycle. These reactions take place in the stroma of the chloroplasts and involve the conversion of carbon dioxide into organic molecules using the ATP and NADPH produced in the light-dependent reactions.
Takes place in the stroma: The light-independent reactions, or Calvin cycle, occur in the stroma of the chloroplasts. Here, carbon dioxide is captured and converted into glucose through a series of enzymatic reactions.
Takes place in the thylakoid membrane: The light-dependent reactions take place in the thylakoid membranes of the chloroplasts. In these reactions, light energy is absorbed by chlorophyll and other pigments, leading to the conversion of water into oxygen and the generation of ATP and NADPH.
In summary, the features mentioned correspond to specific steps and locations within the process of photosynthesis. The release of oxygen is a result of the light-dependent reactions, while the fixation of carbon dioxide and the synthesis of glucose occur in the light-independent reactions. The stroma is the site of the light-independent reactions, and the thylakoid membranes host the light-dependent reactions.
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mercury is a pollutant classified as___?
A. a radioactive waste
B. a heavy metal
C. an organic material
D. a pathogen
Answer: B. a heavy metal.
Explanation:
Mercury is a heavy metal and can be quite toxic if leaked out
Answer:
heavy metal
Explanation:
Which is part of the theory of evolution by natural selection?
O
A. Only the best-adapted animals in a population survive.
B. Evolution can only cause small changes to a species.
C. Adaptations cannot be passed along to the next generation.
) D. Animals that survive cannot pass along their adaptations.
Answer:
The correct answer is: A. Only the best-adapted animals in a population survive.
Explanation:
Natural Selection is the process by which the individuals of a species which has the potential to sustain and survive in adverse or changing environment gets a survival advantage over those individuals which are unable to adapt themselves to altered environmental conditions.As the less potent individuals die in altered environmental conditions the adaptable individuals escapes competition with them for natural resources.Evolution causes species to alter their characteristics depending upon the demand of the conditions. These changes can vary, can be less or drastic.Animals pass all the newly adapted traits to the successive generations either as genetic traits or as acquired traits, as this is necessary for the offspring to survive in the altered environment.Natural selection is best defined as "the survival of the fittest".Answer:A
Explanation:
What does a surface area/volume ratio of 6:1 mean for the cell’s ability to get the materials it needs that move across its surface?
Plz help) I'm offering 50 points and the brainliest
Answer and Explanation:
In a cell, the smaller the surface area in relation to its volume, the lower the rate of diffusion. The ratio of surface area to volume of an object decreases sharply with increase in its size. The materials move across the cell rapidly because the cell has a larger surface area to volume ratio thus the rate of diffusion of materials is high.
Humans are different from each other in many ways, including in their sizes, shapes, skin color, facial features, and handedness. However, all humans are classified as one species because it is possible for one person from one location on the Earth to reproduce with another person from a different location on the Earth. What other evidence can be used in support of the idea that humans are a single species and unique from other species? A. All humans have one vertical line of symmetry in their body plans. B. Humans from different locations speak different languages. C. Humans from different locations can donate blood and organs to one another. D. All humans possess body hair.
Answer:
The correct option is C) Humans from different locations can donate blood and organs to one another.
Explanation:
Organisms belonging to the same species can interbreed and produce fertile offsprings. As humans all around the world can interbreed and produce fertile embryo hence all human beings belong to the same species. Also, the organs and blood of organisms from the same species can be transferred depending on the compatibility. It is less likely for the human body to reject a graft from other human being rather than another species. Although, xenotransplantation has been practiced in the laboratory by scientists but it has not produced any good results.