8.9 All the fossils in the different rocks make up the _______ ____________.

8.9 With fossil record we can see when species first appeared, when species disappeared, and how species __________ over time.

8.9 The oldest fossils that have been found so far are of simple __________.

8.9 Oldest fossils lived about _______ _______ years ago.

8.9 Fossils form in _____________ rock.

8.10 In _______ a German scientist suggested that millions of years ago all the land was one large continent.

8.10 A German scientist called _____ ________ suggested that millions of years ago all the land was one large continent.

8.10 In the 1960s, a new theory of ______ ___________ was developed.

8.10 A meteorite is a fragment of rock from space that falls to Earth.

8.11 The Earth is about _______ _____ years old.

8.11 Geologists have divided up the enormous lengths of time between then and now into ________.

8.11 You can see that each era is divided into several _______.