Fossils are formed when layers of sediment cover the remains of organisms over time.
Fish fish are the ultimate aquatic organism.
Fossils can be formed when layers of sediment cover the remains of fish.
What can be formed when layers of sediment cover the remains of fish?

1. oysters
2. detritus
3. bones
4. deposits
5. fossils
6. metamorphic rocks
7. volcanic rock
8. shells