Question

According to the theory of punctuated equilibrium, when does stasis occur? when environmental conditions are rapidly changing when populations are evolving rapidly when environmental conditions are variable when environmental conditions are stable

Answer 1

When environmental conditions are stable.

EXPLANATION

Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that once species appear in the fossil record the population will become stable, showing little evolutionary change for most of its geological history.

This state of little or no morphological change is called stasis.

Answer 2

Answer: when environmental conditions are stable

Explanation:

According to the theory of punctuated equilibrium, stasis occurs when environmental conditions are stable. According to this theory, evolution occurs through a short burst of speciation, which brings morphological changes to the species. These are followed by long periods of stasis. Stasis means stability. The periods of stability are very long.