Hint: Plate boundaries are where two bits of the Earth's crust, or plates, meet
Hint: This leads to the creation of volcanoes under the sea
Hint: The Galapagos Islands are moving with this plate
Hint: This type of volcano is found on Fernandina island
Hint: Magma is a mixture of molten and semi-molten rocks which is found beneath the surface of the Earth.
Hint: There is often no light and there is a lot of pressure around hydrothermal vents