- What clues did Cassie use to determine that the rock on land was once part of a reef?
- What process had to occur for living coral to be transformed into fossil coral (coral rock)? Is this a fast or slow process?
- Corals serve as the "anchor" of the reef ecosystem. What other organisms live in reef ecosystems?
- What factors do you think might put coral reefs in danger?
- What steps could be taken to protect coral reefs?
