Question

what happens to the earth’s crust as new crust is formed at divergent boundaries? the total crust volume decreases. the total crust volume varies randomly. the total crust volume remains constant.

Explanation:

At divergent boundaries, new crust is formed, but at convergent boundaries, old crust is subducted (recycled back into the mantle). This process of creation and destruction balances out, so the total volume of the Earth's crust remains constant. The first option is incorrect because new crust is added, so volume wouldn't decrease. The second option is incorrect as the process is balanced and not random.

Answer:

The total crust volume remains constant.