Your textbook describes two sequential of interaction between organisms and their environments that have existed since god's creative work began.

Phases or components

Your textbook describes two sequential phases of interaction between organisms and their environments that have existed since god's creative work began. Organisms interact with their environments in different ways. Different organisms of a biological community cooperate and compete for habitats and share the resources in that habitat.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.