The lowest region of atmosphere in which the human being along with other organisms live is known as:a)Ionosphereb)Stratospherec)Lithosphered)TroposphereCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Troposphere .. chemistry in everyday life ncert page 399 chemistry part 2 class 11

Answer

Troposphere is normal for human being and other animal because in this region sufficient amount of oxygen. And also in this region there is the avability of food and shelter.

Answer

Introduction:
The lowest region of the atmosphere in which human beings and other organisms live is known as the troposphere. It is the layer closest to the Earth's surface and extends from the Earth's surface up to an average height of about 8-15 kilometers.

Explanation:
The troposphere is the first and lowest layer of the Earth's atmosphere. It is characterized by decreasing temperature with increasing altitude. The troposphere is responsible for the weather patterns, climate, and life on Earth.

Key Features of Troposphere:
1. Composition: The troposphere is primarily composed of nitrogen (about 78%) and oxygen (about 21%), along with traces of other gases such as carbon dioxide, water vapor, and argon.

2. Temperature Gradient: The temperature in the troposphere decreases with increasing altitude at an average rate of 6.5 degrees Celsius per kilometer. This temperature gradient is known as the lapse rate.

3. Weather Patterns: All weather phenomena, such as clouds, rain, snow, and storms, occur within the troposphere. It is the layer where most of the Earth's atmospheric moisture is located, leading to the formation of clouds and precipitation.

4. Life Support: The troposphere is crucial for supporting life on Earth. It provides the necessary oxygen for respiration and regulates temperature, which is essential for the survival of organisms.

5. Human Activities: The troposphere is also significantly impacted by human activities, particularly through the emission of greenhouse gases. These gases, such as carbon dioxide and methane, trap heat within the troposphere, leading to global warming and climate change.

6. Altitude: The height of the troposphere varies with location and season. It is highest at the equator and lowest at the poles. The average height of the troposphere is around 8-15 kilometers.

7. Boundary: The boundary between the troposphere and the layer above it, known as the stratosphere, is called the tropopause. The tropopause acts as a barrier, preventing mixing between the two layers.

Conclusion:
The troposphere is the lowest region of the atmosphere and is where human beings and other organisms live. It is a vital layer that supports life, regulates weather patterns, and plays a crucial role in Earth's climate system. Understanding the troposphere is essential for studying and addressing environmental issues such as climate change.

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