Question

Which of the following describes a cyclical change in an ecosystem?

A. An area receives less rain each year for many years.
B. The water level in Lake Ontario peaks and dips every few years.
C. Coyotes migrate to an area where no coyotes lived before.
D. A population of juniper trees is replaced by poplar trees.

Answer 1

I think the appropriate response is D. The short-term cyclic changes might be viewed as conditions essential for basic steadiness. Different changes that have a pretty much cyclic example are less unsurprising.

I hope the answer will help you.