How long does it take a water molecule to complete the circuit of
the global conveyor belt?

the correct answer is:

a population changes in response to a change in the environment.

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."

1. is geographic distribution

2 is increasing complexity

3 is transitional forms