The organ systems are consistently working together to maintain _[blank]_. 1.action potential
2.resting potential
3.homeostasis
4.nerve impulses

HOMEOSTASIS.

Explanation:

The nervous and endocrine system exert the ultimate control over homeostasis because they coordinate the functions of the body system.Refulation of body temperature,blood pressure,pH,and gluclose concentration are for examples of how the body maintains homeostasis. The answer should be *homoestasis*

meiosis is the correct answer

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.