Leonard designed a parallel circuit

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

The negative impacts of nonnative species generally outweigh the positive impacts

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air