The Existence of Evolutionary Trends, Such as Increasing Body Sizes

question 22

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.
• E) evolution generally progresses toward some predetermined goal.

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Definitions:

Labour Shortages

A situation in which there are insufficient workers available to fill the existing job vacancies in certain industries or regions.

Population Age Structure

The distribution of individuals in a population according to their ages, which influences growth rates and demographic trends.

Prereproductive

Referring to organisms or life stages that have not yet reached the age or stage where they can reproduce.