A small flock of birds becomes stranded on an isolated island during a hurricane
Their population expands across the island, and over a period of several decades, the average beak size in the population becomes smaller, helping the birds eat the smaller seeds and insects found on the island. Which one of the following processes is best illustrated in this example?
A) Gene flow B) Extinction C) Natural selection D) Genetic drift
C
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Light or moderate-but-steady precipitation is most often associated with which of the following cloud types?
A. nimbostratus B. cumulonimbus C. cirrostratus D. cirrocumulus
Suppose the winds aloft are geostrophic and blowing from the north. In which of the following directions is low pressure located?
A. south B. east C. west D. north
The principle of lateral continuity states that sedimentary beds are deposited horizontally with the oldest beds on the
bottom. a. True b. False
Invertebrates are always animals with shells
a. True b. False