Earth is the only planet that has a and a

In 1915 the german geologist and meteorologist alfred wegener first proposed the theory of continental drift, which states that parts of the earth's crust slowly drift atop a liquid core. the fossil record supports and gives credibility to the theories of continental drift and plate tectonics.

How long does it take for saturn to orbit the sun?

Which phrase describes the time it takes for a planet to make a complete rotation