I think the answer is respiratory and circulatory system
<span>This because some animal diseases, such as rabies, can also infect people. So preventing the spread of these diseases in animals makes the diseases less likely to be spread to humans.</span>
B.Conjugation- process in which a hollow tube forms between two prokaryotes
Mitochondria is the organelle which is involved in cellular respiration and that is linked to development. The primary function is to perform cellular respiration.
Mitrochondria which is also known as powerhouse of the cell Because 32 ATP are created from this organelles. It is produced energy in the form of ATP when cell respire.Oxygen and glucose both are the reactants in the process of cellular respiration.
The major product of cellular respiration is ATP which is waste products include carbon dioxide and water.Cellular respiration takes place in mitochondria, which are often called the cell's "powerhouses" because they make maximume no of a cell's ATP. Glycolysis splits glucose into two three-carbon molecules and makes two molecules of ATP.
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Explanation: Elephants have been extensively hunted for ivory for more than 300 years, natural selection is often proposed as the underlying mechanism for an increase in the proportion of tuskless or small-tusked elephants in a population.