American bison were hunted almost to extinction in the late 1800s. The rapid decrease in (species / population / group) size of the bison has reduced the

genetic (equilibrium / evolution / diversity) of the animals. This kind of

(genetic drift / polygenetic shift / environmental effect) likely occurred

because only a few individuals survived from the original larger population. A

change in (habitat conditions / allele frequencies / genetic equilibrium)

following a large reduction in population size is called a(n) (bottleneck effect /

polygenetic effect / environmental effect).

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Which of these is not a function of some membrane proteins ? a. allowing polar molecules to enter the cell b. recognizing other types of cells c. receiving messeges from other cells b. carrying messages to oher cells

Hurry i need your (100 points) 1) what are the responsibilities of the region of the brain highlighted below? (picture located below) the highlighted portion is at the rear base of the brain, behind the brain stem. regulating homeostasis, hunger and eating, thirst and drinking, and many other functions of basic survival. coordinating movement and balance by using information from sensory nerves, including hand-eye coordination. controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities. regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing. 2)which of the following systems or structures is correctly paired with its function? neurons - brain cells that control thoughts, calculations, and memory cerebral cortex - portion of the brain that controls involuntary body movement peripheral nervous system - carries impulses to and from the central nervous system central nervous system - carries information from the nerves to the muscles and glands

As scientist had investigated evolution from a variety fields they have found