Answer:
Stream gradient refers to the slope of the stream's channel .It is the vertical drop of the stream over a horizontal distance.
Explanation:
Gradient is the slope or steepness of a stream channel. It affects the stream's velocity because the steeper the gradient is the greater the velocity due to gravity.
Answer:
B. They get their energy from the sun
Explanation:
Plants are producers because they produce their own food by getting energy from the sun. A consumer gets food by consuming other organisms.
Hope this helps friend.
Sand sheets and dunes cover approximately 25 percent of the Sahara's surface.
Asthenosphere is the answer of this question. It best describes the all above mention properties.
Asthenosphere is the the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.