Which would happen if more forests were cut down?

a. fossil fuels would build up in the soil.
b. nitrogen would be fixed by bacteria more quickly.
c. the nitrogen cycle would stop.
d. the amount of co2 in the atmosphere would increase.

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.