Question

Which part of the atmosphere is called homosphere ?
(A) Atmosphere up to 70 km from the surface of the earth
(B) Atmosphere up to 80 km from the surface of the earth
(C) Atmosphere up to 90 km from the surface of the earth
(D) Atmosphere up to 110 km from the surface of the earth

Answer 1

HintHomosphere is outlined because it is the lowest part of the Earth’s atmosphere. It lies between the heterosphere and therefore the surface of the world. The homosphere is said to be the lower segment of the two part division of atmosphere

Complete step by step answer
Atmosphere upto 90 km from the surface of the earth, this part of the atmosphere is called the homosphere. The lower layer of the atmosphere is named the homosphere as a result of it's a continuing chemical composition and consists of a virtually unchanging mixture of many gases. The Earth's atmosphere has 2 zones of segments which are said to be major and they are, homosphere and heterosphere. The homosphere is said to be the lower segment of the two part division of atmosphere and it consists of three regions particularly the troposphere, stratosphere and mesosphere. All the 3 regions have identical composition of air. However, the concentration of air keeps decreasing considerably because the altitude will increase.

Additional information
The bulk composition of the air is usually uniform therefore the concentrations of molecules are similar throughout the homosphere. The highest of the homosphere is named the homopause, conjointly called the turbopause. The Earth's homosphere starts at the layer and extends to the turbopause at approximately a hundred km. It incorporates all of the layers like troposphere, stratosphere and mesosphere and therefore the lower part of the layer.

So, the correct answer is an option (C)

Note
It's the earth’s atmosphere below the altitude of roughly eighty kms wherever there's associate degree almost-homogenous composition of N (78%), element (21%), inert gas (10%), CO2, dust particles, aerosols and cloud droplets. It contains over ninety nine of the mass of the Earth's atmosphere. The density of air decreases with height within the homosphere.