Which of the following is true about natural selection? a. natural selection does not cause a species to change. b. natural selection is the only cause of changes in a species. c. natural selection usually causes a species to change gradually. d. natural selection usually causes a species to change suddenly.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !