It depends on the type of interaction, but this typically wouldn't be an environmental scientist at all.
Explanation:
A primatologist, or a biological anthropologist, is most likely to study interactions among gorillas. Primatologists study primate behavior, ecology, intelligence, anatomy, and so forth.
A biologist or ecologist could also study gorillas and this wouldn't be unusual. They would likely study gorillas from a different perspective than a primatologist, who would be trained mainly in primates. A biologist would typically have a broader background that expands beyond primates.
Environmental scientists typically wouldn't study gorillas, although it's not impossible for someone to step outside of their field a bit.
Please note that these are all just generalizations. While most people studying gorillas come from a background in primatology, there are no steadfast rules determining who can study what.
The statement that is not part of the cell theory is C) only animals are composed of cells.
On the other hand, A) cells are the basic unit of structure and function in living things, B) all cells are produced from other cells, and D) all living things are composed of cells are correct.
