Question

sometimes, two species may become so interdependent on each other that they no longer survive without one another. this is called ________. coevolution macroevolution adaptive radiation extinction

Explanation:

Coevolution is when two species evolve in tandem due to their close relationship. Macroevolution is large - scale evolutionary change. Adaptive radiation is when a single species diversifies into many. Extinction is the end of a species. The description fits coevolution.

Answer:

Coevolution