Explanation:
A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts".
I'm pretty sure the answer is true. Hope this helps!
This supports the continental drift idea by example: a fossil animal was in one continent and then you find it in another. This is splitting the continents.