In the Arctic, caribou and musk ox eat different kinds of plants, but the plants they eat typically grow in the same area. Therefore, these two species often require the same space in which to feed. In one part of the Arctic, caribou numbers have decreased and musk ox numbers have increased. Which best summarizes this scenario?

This is an example of cooperation, and the musk ox were better adapted to the environment.
This is an example of predation, and the musk ox were better adapted to the environment.
This is an example of competition, and the musk ox were better adapted to the environment.
This is an example of competition, and the caribou were better adapted to the environment.

No Links, Please :D