Environmental factors that keep a population from increasing

limiting factors or carrying capacity

Environmental factors could include very temperature which might lead to aridity and in the process could lead to genetic mutation or very cold temperatures than usual.

This atmospheric conditions could also exterminate predators which reduce population growth.

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.