According to Hess’s theory, what might happen if the magma under a mid-ocean ridge cools?

Does the energy in a solid increase or decrease when changing to a liquid?

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

What is the effect of returning nuclear reactor cooling water back into bodies of water?