Question

Which is an example of a competitive relationship?

A.
barnacles living on a whale's back feeding on particles in the water

B.
fungus growing around plant roots causing them to grow better

C.
saguaro cactus and sagebrush both needing water in the desert

D.
tapeworm feeding off the nutrients within a human's intestines

Answer 1

the answer is C.saguaro cactus and sagebrush both needing water in the desert.
they are competing for water D is parasitism A is a commensal relationship and B is mutualism