Which factor poses a major threat to coral reefs worldwide?

Question

Accepted Answer

1. Coral reefs are sensitive to water temperature and chemistry.
2. **Ocean warming** causes coral bleaching, which makes corals lose their color and die.
3. **Ocean acidification** reduces carbonate ions, so corals cannot build strong skeletons.
4. These two factors act globally and are the main threats to coral reefs today.

FINAL_ANSWER: b

Answer

Answer

Answer