Which one of the following is an example of resource partitioning? a. a species of butterfly and a species of bee that pollinate the same flower b. two species of mice—one that lives in the woods and the other that lives in fields c. two species of birds that eat fruit from the same tree d. two species of squirrels—one that eats acorns from the branches and one that eats acorns that have fallen to the ground

The correct answer is option D.

Explanation:

Resource partitioning is a situation in which different type of living organisms live in the same ecosystem or environment in a way so it is easy for them to co-exist because they are not sharing the same resources.

Two species of squirrels can co-exist because both types of squirrel are feeding on acorns but they are not getting it from the same location, one feed  on the trees, the other feed on the ground.

Thus, the correct answer would be option D.