Who is charles darwin and his theory of natural selection

   Charles Darwin was a naturalist from the 1800's. He developed the theory of natural selection which became the foundation of modern evolutionary studies. Natural selection is the survival and reproduction of individuals and how they adapt.

and after water is usually warmed by the sun the water temperature raises and then evaporates .

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.