Describe primary productivity at hydrothermal vent regions. how does this differ from coral reefs?

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.