Which of the following is a stock energy resource?
sunlight
water
lightning
coal

the answer for this question would be d. glaciers

correct answer is a. and d.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

you can have just about every answer you can think of