Fill in the blank.
are comprised of which are groups of interbreeding individuals of the same species.
A)Communities, populations
B) Populations, herds
C) Communities, families
D) Families, populations

D)

Explanation:

I think so, not really sure though, hope it helps :/

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.