Question

Why are divergent plate boundaries called constructive

Answer 1

Answer:

They are called constructive plates because

Explanation:

They are called constructive plates because when they move apart, magma rises up in the gap- this forms volcanoes and eventually new crust. One example is the Mid-Atlantic Ridge, where the gap can be found in Thingvellir, Iceland.

Answer 2

When they move apart magma rises up in the gaps I think