The endocrine system send chemical signals which last a ___ period of time. The nervous system send _ signals, which last a much _ period of time

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

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

Describe two recent or ongoing space missions.