Compare and contrast an upper water column coastal ecosystem food web with the anaerobic food web of a shallow marine sediment with respect to the energy sources and capture supporting these system, the flow of energy through the system, and the main mineral nutrient sources

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.