Answer:
A species refers to the group of similar organisms that can interbreed to produce a viable offspring. For example, <em>Homo sapiens </em>is a species of humans, <em>Panthera leo </em>refers to the species of lions et cetera.
In contrast, a population in ecology refers to the group of organisms of the same species living in a particular area. For example, the deer population in a forest, human population in a town et cetera.
For example, <em>Aptenodytes patagonicus </em>refers to a species of penguins but number of penguins of the same species living in a particular area would make up a penguin population of that area.
The answer for 21 I think is false
Adrenaline, Cortisol, Norepinephrine.
The treatment of serious psychological disorders with prescribed medications or medical procedures that directly influence the nervous system is called <u>biomedical therapy.
</u>It is a type of therapy where medicine is used to influence physiological issues in the body, so as to treat the psychological problems of the brain. There are various ways to do this, but the most "popular" ones are drug therapies, electroconvulsive (shock) treatment, as well as psychosurgery. <u>
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Which of what? I need more information to decipher that.