populations change naturally over time. which mechanism is a method of artificial selection rather than natural selection?
a) genetic drift
b) natural selection
c) selective breeding
d) geographic isolation

What evidence for the age of the earth is indicated by the fact that sedimentary rock is found on mountain tops? that the earth has expanded outward from water beds that mountains formed first before anything else that some force lifted the rocks from the water the earth is not very old and has not had time for many rock layers to form