This species of squirrel has been separated by the Grand Canyon. Which term best describes the differences
between them?
) Variation
O b) Extinction
Population
d) Overpopulation
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If the kidney cell of a bird has 64 chromosomes how many chromosones does the sperm of this bird have

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

What kinds of foods are high in lipids?