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Ozone Hole Video Lecture - Famous Books for UPSC Exam (Summary & Tests)
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FAQs on Ozone Hole Video Lecture - Famous Books for UPSC Exam (Summary & Tests)
| 1. What is the ozone hole? |  |
Ans. The ozone hole refers to the thinning of the ozone layer in the Earth's stratosphere, particularly over the polar regions. It is a region with significantly depleted ozone concentrations compared to the rest of the atmosphere.
| 2. What causes the formation of the ozone hole? | |
Ans. The primary cause of the ozone hole is the release of certain man-made chemicals called chlorofluorocarbons (CFCs) into the atmosphere. These chemicals contain chlorine and bromine atoms that can destroy ozone molecules when they reach the stratosphere.
| 3. What are the consequences of the ozone hole? | |
Ans. The ozone hole allows more harmful ultraviolet (UV) radiation from the sun to reach the Earth's surface. This increased UV radiation can have detrimental effects on human health, such as skin cancer, cataracts, and weakened immune systems. It can also harm marine life, damage crops, and disrupt ecosystems.
| 4. How is the ozone hole monitored and measured? | |
Ans. The ozone hole is monitored using various instruments and satellites that measure the concentration of ozone in the atmosphere. One commonly used measurement is the Total Ozone Mapping Spectrometer (TOMS), which provides global measurements of ozone levels. Ground-based instruments and weather balloons are also used to validate satellite data.
| 5. Can the ozone hole be repaired? | |
Ans. Efforts to repair the ozone hole have been made through international agreements like the Montreal Protocol, which phased out the production of ozone-depleting substances. As a result, the ozone layer is slowly recovering, and the size of the ozone hole has been decreasing. However, complete recovery is expected to take several decades. Continued adherence to international agreements and reducing the use of ozone-depleting substances are crucial for the ozone hole to heal completely.
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