2. The stepper the gradient the more energy the stream has as it flows down.
3.. the higher the gradient, the higher the velocity and the ability to erode and carry sediment . As the gradient decreases toward the coast,stream velocity slows and the ability to transport sediment decreases.
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries,
In a river, sediment is deposited on the inside bends.
The domain archaea are able to tolerate extreme environments.
Answer is D
