The Existence of Evolutionary Trends, Such as Increasing Body Sizes

question 14

Multiple Choice

The existence of evolutionary trends, such as increasing body sizes among 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.

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