3. How do tadpoles adapt to fast-moving water?* A. They attach themselves to each other.
B. They live in the mud
C. They attach themselves to rocks.
D. They live under rocks.

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

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

When analyzing tree rings, what do scientists assume a thin ring indicates?