Why does natural selection make populations more adapted to their environments?
What will be an ideal response?
Organisms with heritable, advantageous traits reproduce more. As a result, these advantageous traits become more common in a population and make the population better adapted to its environment.
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The extent that a fast food chain is spread over a region would be referred to as its ________
A) concentration B) clustering C) dispersal D) pattern E) diffusion
Rocks exposed in the Grand Canyon represent
a. a transgression. b. a regression.
A grasshopper population in a prairie is limited in large part by the number of birds in the region. Following a hurricane that killed many of the birds, the grasshopper population exhibits exponential growth
This happens because the grasshoppers experienced A) a new biotic potential with steady environmental resistance. B) a new much lower biotic potential with decreased environmental resistance. C) a steady biotic potential but suddenly decreased environmental resistance. D) a decreased biotic potential and decreased environmental resistance.
The cP air-mass in North America originates in:
A) Siberia. B) the North Atlantic. C) Greenland. D) interior Alaska and Canada. E) the Arctic basin.