Coral reefs may lose almost all habitats by 2020: study

The video discusses the impact of acidity and climate change on coral reefs, leading to coral bleaching and the ejection of symbiotic algae. A study presented to the American Geophysicists Union predicts that nearly all coral reef habitats will be lost by 2100, with 70% to 90% disappearing in the next 20 years. Efforts to regrow bleached corals are unlikely to succeed long-term. Some areas like Baja California and the Red Sea may remain viable for coral growth, but are not ideal due to proximity to rivers. Climate warming and rising acidity are the main causes of coral habitat decline, with plastic pollution exacerbating the issue.

What is the predicted fate of coral reef habitats by the year 2100 according to the study?

• They will thrive and expand.

• They will remain unchanged.

• Nearly all will be destroyed.

• They will slightly decrease.

What is the main challenge faced by projects trying to regrow bleached corals?

• Insufficient manpower.

• Lack of funding.

• Inadequate technology.

• Non-viability by 2100.

Which locations are mentioned as some of the last viable sites for growing reefs in 2020?

• Galapagos Islands and Seychelles.

• Hawaii and the Caribbean.

• Baja California and the Red Sea.

• Great Barrier Reef and Maldives.

What are the main culprits for the shrinking of coral habitats?

• Climate warming and rising acidity.

• Lack of sunlight and nutrients.

• Overfishing and tourism.

• Natural predators and diseases.

Why is plastic pollution not considered a major threat to coral habitats in the study?

• There are few places left for plastics to affect.

• It is not extensive enough.

• Plastics are beneficial to coral growth.

• Corals are immune to plastic pollution.