7. In the biosphere, a. both trees and animals emit oxygen
b. trees emit oxygen and animals consume oxygen
c. animals emit oxygen and trees consume oxygen

b

Explanation:

Plants use a process called photosynthesis. This is when they creates oxygen. While animals inhale oxygen, but don't create any.

"griffith's experiment discovering the "transforming principle" in pneumococcus bacteria. griffith's experiment, reported in 1928 by frederick griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation." - griffith's experiment.

answer; bodies of water store heat during the day and release it at