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Most dense layer of atmosphere vulnerable to pollution (OR) Life supporting zone of atmosphere is –
  • a)
     Ionosphere
  • b)
    Mesosphere
  • c)
    Troposphere
  • d)
    Stratosphere
Correct answer is option 'C'. Can you explain this answer?
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Most dense layer of atmosphere vulnerableto pollution (OR) Life suppor...
Life supporting zone of atmosphere is the Troposphere
The troposphere is the most dense layer of the atmosphere and is closest to the Earth's surface. It is the layer where all weather phenomena occur and where humans and other living organisms reside. Here is a detailed explanation of why the troposphere is considered the life supporting zone of the atmosphere:
1. Composition:
- The troposphere is primarily composed of nitrogen (78%) and oxygen (21%), along with traces of other gases such as carbon dioxide, water vapor, and various pollutants.
- This composition is essential for supporting life as it provides the necessary gases for respiration and photosynthesis.
2. Temperature Gradient:
- The troposphere experiences a decrease in temperature with increasing altitude. This temperature gradient allows for the formation of clouds and precipitation, which are vital for the water cycle and sustaining ecosystems.
3. Oxygen Concentration:
- The troposphere contains the highest concentration of oxygen compared to other atmospheric layers.
- Oxygen is crucial for the survival of aerobic organisms, including humans, as it is necessary for cellular respiration.
4. Protection from Harmful Radiation:
- The troposphere acts as a shield, protecting the Earth's surface from harmful ultraviolet (UV) radiation by absorbing and scattering it.
- This protection is crucial for preventing DNA damage and reducing the risk of skin cancer and other harmful effects of UV radiation.
5. Circulation and Mixing:
- The troposphere is characterized by vertical and horizontal air movements, which aid in the circulation and mixing of gases and pollutants.
- This helps in distributing heat and moisture around the globe, maintaining a relatively stable climate, and diluting pollutants to minimize their harmful effects.
In conclusion, the troposphere is the most important layer of the atmosphere for supporting life on Earth. Its composition, temperature gradient, oxygen concentration, protection from harmful radiation, and circulation all contribute to its role as the life supporting zone of the atmosphere.
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Most dense layer of atmosphere vulnerableto pollution (OR) Life suppor...
Because the moderator temperature at above sea level is troposphere
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Most dense layer of atmosphere vulnerableto pollution (OR) Life supporting zone ofatmosphere is –a)Ionosphereb)Mesospherec)Troposphered)StratosphereCorrect answer is option 'C'. Can you explain this answer?
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