How do the atmosphere and biosphere interact over time?

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

How many electrons can occupy any electron orbital?

Identify the fungus type pictured below. the image shows a mushroom used often in cooking, will gills underneath its cap.