The medium through which a sound wave passes can be a solid, a liquid, or a gas. properties of a wave might change when it moves from one medium to another. what happens to the speed of a sound wave when the medium changes from a gas to a solid?

it speeds up and then slows down.

it slows down.

it speeds up.

it remains the same.

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 do cells grow and reproduce to maintain homeostasis?

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen