The existence of evolutionary trends,such as increasing body sizes among various horse species,is evidence that
A)a larger volume-to-surface area ratio is beneficial to all mammals.
B)an unseen guiding force is at work.
C)evolution always tends toward increased complexity or increased size.
D)in particular environments,similar adaptations can be beneficial in more than one species.

Question

Quizplus · Accepted Answer

The existence of evolutionary trends, such as increasing body sizes among various horse species, is evidence that in particular environments, similar adaptations can be beneficial in more than one species. It is not evidence of an unseen guiding force, evolutionary trends do not necessarily always tend towards increased complexity or size, and a larger volume-to-surface area ratio may not be beneficial to all mammals in all environments.

The Existence of Evolutionary Trends,such as Increasing Body Sizes Among