Paper 2
Cards (5)
- Fossils are the remains of organisms thousands of years ago
- Fossils provide evidence that organism lived years ago
- Fossils tell us how much or how little organisms have changed
- Fossils form from gradual replacement by minerals
- teeth shells bones dont decay easily
- they last long when buried
- when they decay they get replaced with minerals
- minerals form a rock like substance
- Fossils from casts and impression
- Fossils can be formed when an organism is buried in a soft material like clay
- clay hardens and organism decays
- organism leaves a cast