Ameandering river is flowing in a broad, alluvial valley and the river is silt-laden but also moves sand and a small amount of gravel. the government decides to build a dam across the valley for power and flood control. what will happen to the river downstream of the dam?

the correct answer is d

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers

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