Which is one purpose of cell division?
a. to increase the number of cells
b. to produce proteins
c. to use energy
d. to acquire food?

Match the types of competition to their descriptions.

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

Why do carbohydrate molecules function so well as fuel for the body?