Why are there many separate ecosystems in a rain forest?
a. different conditions support different organisms.
b. there are three levels of consumers in rain forests.
c. rain forests have very few primary consumers.
d. there are three different seasons in a rain forest.

A. Different conditions support different organisms.

A-P-E-X VERIFIED..!

The surface area to volume ratio is High

Explanation:

The presence of microvilli in the small intestine increases the surface area of the small intestine greatly. This consequently increases the amount of nutrients that can be absorbed from the food that passes through the small intestine. Thus, we can say that the surface area to volume ratio of the cells in the small intestine is high.