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What are Corals Video Lecture | Geography for UPSC CSE
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| 1. What are corals? |  |
Corals are marine invertebrates that belong to the phylum Cnidaria. They are sessile animals that secrete calcium carbonate to build hard skeletons, forming the coral reefs found in tropical and subtropical oceans.
| 2. How do corals reproduce? | |
Corals reproduce both sexually and asexually. Sexual reproduction occurs when corals release eggs and sperm into the water, which combine to form larvae. Asexual reproduction happens through budding, where new polyps grow from the parent coral.
| 3. What is coral bleaching? | |
Coral bleaching occurs when corals expel the symbiotic algae living within their tissues, causing them to turn white or pale. This happens due to stressors like increased sea temperatures, pollution, or changes in water chemistry. Bleached corals are more vulnerable to disease and mortality.
| 4. Why are coral reefs important? | |
Coral reefs are vital ecosystems that support a wide variety of marine life. They provide habitats for numerous fish species, protect coastlines from erosion, and contribute to global biodiversity. Additionally, coral reefs are significant tourist attractions, generating economic benefits for local communities.
| 5. How can we protect coral reefs? | |
To protect coral reefs, it is essential to reduce carbon emissions and mitigate climate change, as rising sea temperatures are a major threat to their survival. Additionally, practicing sustainable fishing methods, reducing pollution, and establishing marine protected areas can help conserve and restore coral reef ecosystems.
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