What do you think the cardinal is trying to communicate with its song?

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

Why is it important that fibrin is insoluble in water?

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences