Give an example of how gravity can affect the speed of an object.

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

20 the compound al(nh3)2 has atoms of nitrogen.

Explain why biological control methods are generally environmentally superior to chemical pest control methods.