Question

Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers

• A. Ozone
• B. Ammonia
• C. Methane
• D. Nitrous oxide

Answer 1

The Correct Option is A

The question pertains to the depletion of gases in the atmosphere that can lead to increased instances of skin cancer. The correct answer is the "Ozone" gas. Let's delve into the reasoning behind this choice:

1. Understanding the Role of Ozone in the Atmosphere:
   • The ozone layer, found in the Earth's stratosphere, plays a critical role in shielding the planet from harmful ultraviolet (UV) radiation from the Sun.
   • UV radiation is known to cause skin cancer, cataracts, and can also affect the immune system. It also adversely affects marine and terrestrial ecosystems.
2. Consequences of Ozone Depletion:
   • When the ozone layer is depleted, more UV-B radiation reaches the Earth's surface, which can increase the incidence of skin cancers, such as melanoma and non-melanoma skin cancers.
3. Examination of Other Options:
   • Ammonia, Methane, and Nitrous Oxide do not have a significant impact on the filtering of UV radiation that causes skin cancer. While these gases can have environmental effects, such as contributing to air pollution and greenhouse warming, they are not directly related to skin cancer increase due to UV exposure.
4. Conclusion:
   • The depletion of the ozone layer poses a significant risk to human health by increasing exposure to harmful UV radiation, thereby elevating the risk of skin cancers and other health issues.