What is the theory of punctuated equilibrium? A. It describes one way that new species arise. B. It explains how domestic animals evolved. C. It explains why mass extinction occur. D. It describes the rate of geologic time.

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.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

for a different answer set the answer would be because the oxygen in the water had depleted (apex)