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GC Leong: Island & Coral Reefs Video Lecture - Geography for UPSC CSE

FAQs on GC Leong: Island & Coral Reefs Video Lecture - Geography for UPSC CSE

1. What is the importance of coral reefs?
Ans. Coral reefs are of immense importance as they provide habitat and protection for numerous marine organisms, contribute to the overall health of the ocean ecosystem, act as natural barriers against coastal erosion, and support tourism and economic activities.
2. How are coral reefs formed?
Ans. Coral reefs are formed through a process called coral calcification. When coral polyps secrete calcium carbonate, it forms a hard skeleton that accumulates over time, creating the framework of a reef. This process is facilitated by the symbiotic relationship between coral polyps and algae called zooxanthellae.
3. What are the threats to coral reefs?
Ans. Coral reefs face several threats, including climate change-induced ocean warming and acidification, pollution from land-based activities, overfishing, destructive fishing practices, and physical damage from human activities such as coastal development and boating.
4. How do coral reefs contribute to the economy?
Ans. Coral reefs contribute significantly to the economy through various avenues. They support tourism and recreational activities, attracting visitors who engage in activities like snorkeling, diving, and fishing. Reefs also provide coastal protection, reducing the impact of storms and minimizing erosion, which benefits coastal communities and infrastructure.
5. What can be done to protect coral reefs?
Ans. To protect coral reefs, it is crucial to address the root causes of their degradation. This includes reducing greenhouse gas emissions to mitigate climate change, implementing sustainable fishing practices, managing coastal development to minimize impacts, reducing pollution from land-based sources, and establishing marine protected areas. Additionally, raising awareness and promoting education about the importance of coral reefs can also contribute to their protection.
162 videos|485 docs|254 tests
162 videos|485 docs|254 tests

Timeline

00:10 Island
01:06 Continental Island
02:32 Oceanic Island
04:03 Coral Polyps
06:16 Types of Coral Reefs
10:10 Subsidence Theory by Charles Darwin
10:33 Glacial Control Theory by R.A. Daly
More

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