Question

rachel is comparing the diets of various species of birds within the amazon rainforest. what kind of investigation is this? descriptive investigation comparative investigation none of these experiment

Explanation:

Rachel is comparing diets of different bird - species. A comparative investigation involves comparing two or more things. Here, she is comparing the diets of various bird species, so it is a comparative investigation. It is not just descriptive as it involves comparison, and it is not an experiment as there is no manipulation of variables.

Answer:

B. Comparative Investigation