Question

The heaviest and lowermost layer of the atmosphere is called

Answer 1

The heaviest and lowermost layer of the atmosphere is called 'troposphere'.

• Our planet's atmosphere is divided into many layers which have different geographical characteristics.

• The primary layer of the atmosphere is known as the troposphere.

• This troposphere is the lowermost layer of our atmosphere and it contains most of the atmospheric contents of the total atmosphere and that's why it is the heaviest atmospheric layer too.

Answer 2

The heaviest and the lowermost layer of the atmosphere is known as Troposphere.  

Explanation:  

• The troposphere is the name of the primary 'layer of the atmosphere' starting from the surface of the planet.
• It is this 'layer of the atmosphere' that is obviously the lowest and is also known to have the highest mass.
• As this layer contains all the water vapor of the earth and also practically consists of the “air” of the earth, it is laden with gases, minuscule particles and this makes it the heaviest.
• With height, the 'water vapor content' and the temperature reduces in the troposphere.

Learn more about Troposphere:

What is the altitude range of the troposphere?

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