The villi can increase the surface area in the small intestine for absorption of digested food. As the villi has a thin wall, one cell thick, which can speed up diffusion, and a network of blood capillaries to absorb and transfer nutrients.
And in large intestine, those folds can also increase the surface area for reabsorption of unabsorbed food, mostly water.
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This is just the Criteria For Success at my school so hope this helped :)
The correct answer is it decreases genetic diversity only by reducing population size.
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The great explanation for this is a bottleneck effect, which is an extreme example of genetic drift. The bottleneck effect occurs when the size of a population is reduced due to a catastrophe. When it happens, only a small, random number of individuals survive the event and pass through the bottleneck. Thus, the genetic composition of the random survivors is now the genetic composition of the entire population which means that the genetic diversity is reduced.</span>
The correct answer is D. heavy rain on a sloped granite.