The document discusses various threats to coral reefs from pollution and environmental factors. Warm water temperatures, pollution from industrial and residential waste, oil spills, fishing practices, and an overabundance of nutrients can all damage coral reefs. Climate change and rising ocean temperatures also contribute to bleaching and diseases that are devastating reefs. If coral reefs continue to be destroyed, it will have negative economic and environmental consequences for humans. Protecting coral reefs requires addressing issues like global warming and better waste management practices.