Geologic processes change Earth’s surface. Some geologic processes are fast and some are slow. Some are constructive and some are destructive. A river makes a valley in rock by erosion. 1) Is the river’s erosion a fast or slow process? Explain your answer.

2) Is the river’s erosion a constructive or destructive process? Explain your answer.

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Explanation:

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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