Question

The lowermost layer of atmosphere in which man and other living organisms exist, is called as
(A) Mesosphere
(B) Stratosphere
(C) Troposphere
(D) Thermosphere

Answer 1

We have studied about the layers of the atmosphere in lower classes. The levels existing in the earth's surroundings are given in the options. Look carefully in the given choices and pick out the correct order of tiers of earth's environment beginning from the floor of the earth and then moving at greater altitudes.

Complete answer:
Earth's surroundings is a layered shape of atmosphere consisting of six layers. Starting from earth's surface, the six layers are the Troposphere, Stratosphere, Mesosphere, Thermosphere, Ionosphere and Exosphere.

Troposphere starts from earth's surface and extends upwards 8 to 15 kilometres high. This layer is the most dense and our climate is due to this region. Clouds are observed in this layer.

Stratosphere is the layer above the troposphere extending 50 kilometres high. This layer has a lot of significance. This layer has an ozone layer which absorbs and scatters the solar ultraviolet radiations.
Commercial jet aircrafts additionally fly in the lower stratosphere to avoid turbulence in the troposphere.

The Mesosphere is present above the stratosphere extending 85 kilometres high. Meteors are burned in this layer

Thermosphere is the layer that is present above the mesosphere extending 600 kilometers high. Satellites are hooked up in this layer. One of the most beautiful herbal phenomena viewed at the poles of the earth, Aurora additionally happens in this layer.

lonosphere is a combination layer of mesosphere and thermosphere. This layer is rich in ionized atoms and molecules and electrons and stretches from about 48 kilometers above the floor to about 965 km. Radio communications are possible due to the presence of this layer.

Exosphere is the topmost layer of the surroundings, the place the earth's environment ends. It is the layer that is present above the thermosphere and extends up to 10,000 kilometres height.

Therefore, the order of earth's ecosystem from backside to pinnacle is the Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.

Hence, the correct answer is option (C)

Note: Remember earth's surroundings starts from the surface of the earth and ends at 10,000 kilometres above the earth's surface in the exosphere. Earth's surroundings is the purpose why we can breathe earth. Earth's atmosphere is made up of gases like nitrogen, oxygen, carbon-dioxide, etc. Troposphere is the layer of surroundings present at floor level.