Describe how faults and
folds form in Earth's crust?

Faults occur when enough stress builds up in rock, the rock breaks. A reverse fault has the same structure as a normal fault but the blocks move in the opposite direction. Reverse faults created part of the Rocky Mountains. Folds are bends in rock that form when compression shortens and thickens part of Earth's crust.

Explanation:

Faults occur when enough stress builds up in rock, the rock breaks. A reverse fault has the same structure as a normal fault but the blocks move in the opposite direction. Reverse faults created part of the Rocky Mountains. Folds are bends in rock that form when compression shortens and thickens part of Earth's crust.

- Quizlet

answer; i believe the correct answer is ( proteins );

the index of refraction of the second medium is higher. i just took the test trust me !