The diffusion of water across the cell membrane is called:
a. exocytosis
b. osmosis
c. active transport
d. endocytosis

In the practice of science, this type of reasoning is used to develop explanations.

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil

The wind speed in the region between cities a and b was probably the greatest at noon on which day