Your answer is D lives in the same region as others closely related species. Because it wouldn't be C cause that's not isolation it would be B cause there not plants and its not A because it is reproductive but its not isolation.
The answer to this question is D
Answer:
to show the function of one organ in the digestive tract in isolation
There won't be any Photosynthesis occurring and plants and tress will eventually die.. When the plants die the omnivorous animals will die of hunger..... Also we will be suffering from famine
