| A | B |
|---|
| Earth's Age | 4.6 Billion Years Old |
| Fossils show change in living things occurs | slowly |
| Fossil | Remains of organisms that lived long ago |
| Geologic Time Scale | Shows Major events in Earth's history |
| Organisms have evolved | from simple to complex |
| Survival of the Fittest | Natural Selection |
| Charles Darwin | Scientist who came up with the idea of Natural Selection |
| Finches | Darwin studied this in the Galapagos Islands |
| Offspring | Children |
| Incomplete | Fossil Record is _____ since we do not know about all fossils |
| Early fossils were very | Simple |
| Modern Fossils are more | Complex |
| Embryo | Earliest stage of development |
| Studying embryos tells us | There may be a common relative between us and other organisms |
| Species | Same type of organism |
