One way magma can form is from:

A. an increase in pressure along a rift valley

B. a decrease in the amount of water which can occur at subduction boundaries

C. an increase in temperature such as over a hot spot

D. A decrease in temperature such as an Iceland

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3 July, 10:42

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Jadyn Schaefer · Answer 1

C is the answer, Magma is formed by hot spots in the mantle when hot material undergoes decompression, melting as it rises.

One way magma can form is from:A. an increase in pressure along a rift valleyB. a decrease in the amount of water which can occur at subduction boundariesC. an increase in temperature such as over a hot spotD. A decrease in temperature such as an Iceland