Streams erode sediment from their banks. They pick up and transport sediments. As a stream erodes its banks, it creates a V-shaped valley (Figure above). This contrasts with the U-shaped valleys created by glaciers.
The answer is:
_______________
The hydrosphere.
Unitary: no local decisions.
Federal: some local decision.
Confederation: a lot of local decisions.
4) Polaris
Stars emit light with energy generated by nuclear fusion, think of the Sun as an example. Polaris is a star, it's the brightest star in the little bear constellation, and therefore the correct answer.
the answer i think is C but doube check
