What can increase the variation of genetic traits in a population?

a. Mutations
b. Adaptations
c. Natural selection
d. All of these choices


ANS: A
Mutations are a way to add new genetic variation into a population. They are a random alteration in an
individual's genes. Most mutations are not favorable. Information can be found in the section The
Concept of Evolution Helps Explain Life in the Ocean.

Environmental & Atmospheric Sciences

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Landslides cannot occur without triggers.

a. true b. false

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The British set up __________ to grow tea, rubber, and coconuts on Ceylon.

Fill in the blank(s) with the appropriate word(s).

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This type of cloud is typically on the top part of a hurricane

A) cirrostratus. B) cumulonimbus. C) altocumulus. D) nimbostratus.

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