Nitrogen is obtained from the fractional distillation of liquefied air at about

A greenhouse gas that absorbs energy and maintains the earth's temperature is

The main constituent in air is

On cooling, a liquid will be changed into

Combustion cannot take place without

Breathing is a process that refers to the inhaling and exhaling of

Greenhouse gases and other harmful gases are bringing huge damage to the atmosphere like

The process of burning under the presence of oxygen is known as

In desert areas, the water vapor content is

To perform fractional distillation of air, it must be liquefied and then purified to remove

Fish exchange oxygen and carbon dioxide through gills in

Water vapor is less dense than

The moisture capacity of air is called

Photosynthesis is a process in which carbon dioxide and water combine to form

The liquefied air is put into an apparatus known as

The percentage composition of oxygen in exhaled air is

The first step of fractional distillation of liquefied air is to bring the air to a very

The state that fills the volume of its container is

The percentage composition of carbon dioxide in exhaled air is

As the temperature of the air increases, there is an increases in the capacity of