8. what can cause mantle rock to melt and form magma?\naddition of water\nincrease in pressure\ndecrease in…
8. what can cause mantle rock to melt and form magma?\naddition of water\nincrease in pressure\ndecrease in temperature\nall of these
Answer
Brief Explanations:
The addition of water can lower the melting - point of mantle rock and cause it to melt and form magma. An increase in pressure generally does not cause melting (it can even prevent it in some cases), and a decrease in temperature will not cause melting.
Answer:
A. Addition of water