salt water changes coral into fossils. the reefs formed in a freshwater lake. the sea level has changed over time. coral reefs can form on dry land.
The discovery of fossilized coral reefs on land is evidence that

Options:
- salt water changes coral into fossils.
- the reefs formed in a freshwater lake.
- the sea level has changed over time.
- coral reefs can form on dry land.

the sea level has changed over time.