Answer
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Hint: Troposphere is the lowest layer of the Earth’s atmosphere. This layer basically consists of water vapor and mature particles. This layer starts at the surface of the Earth and goes up to a height of 7-20km. Moreover, all weather occurs within this layer.
Complete step by step answer:
Basically, the atmosphere is a protective layer of gases that shelters all life on earth keeping temperatures within a relatively small range and blocking out the harmful rays of sunlight. Basically, there is no boundary between the atmosphere and the outer surface. The atmosphere has five distinct layers that are determined by the changes in temperature than happen with increasing altitude. So, there are five different layers which are listed below and the diagram is as shown:
1.Exosphere
2.Thermosphere
3.Mesosphere
4.Stratosphere
5.Troposphere
Now, we will discuss the troposphere. It is the lowest layer in the atmosphere and extends upwards about 10kms above sea level starting from the ground. It contains $75\% $ of all air in the atmosphere. Generally, the temperature decreases with increase in height because the atmosphere distributes itself according to gravity. In the troposphere, the temperatures decrease with altitude. This is because the gas absorbs very little of the incoming solar radiation. Moreover, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.
Hence, option A is correct.
Note: The process of gases in the Earth’s atmosphere trapping the Sun’s heat is known as greenhouse effect. Moreover, due to this process, the Earth is much warmer than it would be without an atmosphere. This effect makes the Earth a comfortable place to live.
Complete step by step answer:
Basically, the atmosphere is a protective layer of gases that shelters all life on earth keeping temperatures within a relatively small range and blocking out the harmful rays of sunlight. Basically, there is no boundary between the atmosphere and the outer surface. The atmosphere has five distinct layers that are determined by the changes in temperature than happen with increasing altitude. So, there are five different layers which are listed below and the diagram is as shown:
1.Exosphere
2.Thermosphere
3.Mesosphere
4.Stratosphere
5.Troposphere
Now, we will discuss the troposphere. It is the lowest layer in the atmosphere and extends upwards about 10kms above sea level starting from the ground. It contains $75\% $ of all air in the atmosphere. Generally, the temperature decreases with increase in height because the atmosphere distributes itself according to gravity. In the troposphere, the temperatures decrease with altitude. This is because the gas absorbs very little of the incoming solar radiation. Moreover, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.
Hence, option A is correct.
Note: The process of gases in the Earth’s atmosphere trapping the Sun’s heat is known as greenhouse effect. Moreover, due to this process, the Earth is much warmer than it would be without an atmosphere. This effect makes the Earth a comfortable place to live.
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