The cell membrane contains channels and pumps that move materials from one side to the other. what are these channels and pumps made of?

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior

Which statements best describe monsoons? check all that apply. they force cool, moist air from oceans to rise. they are winds that blow in the opposite direction of a normal wind. they bring rain in the summer and drought in the winter they increase rainfall in south asia, africa, and australia. they influence precipitation as wind moves near a mountain.