Air Pollution

1) How Is Ozone Layer Depletion Related to Skin Cancer?

• A layer of ozone gas in the atmosphere protects us from the sun's harmful UV rays.
• However, the ozone layer is affected by the gases released due to air pollution. These gases have created holes in this layer, allowing UV rays to reach the Earth's surface.
• If any part of our body remains exposed to these UV rays for a long time it may lead to skin cancer.

2) Write the Differences Between Renewable and Non-Renewable Sources of Energy.

The differences between renewable and non-renewable sources of energy are as follows—

Renewable Sources	Non-renewable Sources
Renewable sources of energy will not get depleted over time.	Non-renewable sources of energy will be depleted over time.
These sources cause less or no pollution at all.	These sources lead to environmental pollution.
Examples: Wind energy, solar energy, etc.	Examples: Coal, natural gas, and petroleum

3) What Is Greenhouse Effect?

• The atmosphere surrounding the Earth is a mixture of gases. Among these gases, carbon dioxide The atmosphere surrounding the Earth is a mixture of gases. Among these gases, carbon dioxide and methane can absorb the sun's heat.
• As a result, the Earth remains warm, which is essential for the sustenance of life.
• The greenhouse effect is trapping the sun's heat in the Earth's atmosphere due to these gases.

4) How Do Toxic Gases Affect Our Bodies?

• Toxic gases can damage the cells or tissues of our bodies. Examples of such gases are methane, butane, propane, carbon dioxide in higher amounts, etc.
• These gases, if they enter our body, can lead to the following effects—
• Cancer; can be related to the lungs, skin, kidneys, or bones.
• Respiratory disorders.
• Birth defects in pregnant women.

5) Why Are We Advised To Minimise the Usage of Deodorants?

• Deodorants emit a specific type of compound called chlorofluorocarbons into the environment.
• These compounds are air pollutants and cause depletion of the ozone layer.