Answer: it is the rock formed within the rocks crust.
Explanation: Rocks formed from magma are called igneous rocks. Intrusive igneous rocks form when magma cools inside the Earth. Rocks that form from magma erupting onto the Earth's surface are called extrusive igneous rocks. Extrusive igneous rocks have little to no time to crystallize and, as a result, the crystals are very small or microscopic.
Because when we burn or use fossil fuels we make CO2 which harms our environment and contributes to global warming while if we use alternative and renewable energy we are able to cut down on our CO2 emissions