Contraction of the thin sheet of muscle separating the lungs from the abdominal cavity called the

The is the most efficient muscle of breathing. It is a large, dome-shaped muscle located at the base of the lungs.

cramming before a final is bad because it makes a student's stress level higher. students who embrace cramming to get through a final exam week find themselves struggling to perform consistently, once the brain adjusts to prolonged sleep deprivation.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms