Human respiratory system contains respiratory tract and

Earth's atmosphere extends hundreds of kilometers above the

A method that is mainly used in separating the components of crude oil is known as

Compounds made up of ammonia are generally used for the manufacturing of

In leaves, gaseous exchange takes place through tiny pores under the leaves known as

There is no boundary between atmosphere and space, so the density of atmosphere decreases with

The chemical formula of ozone is

A blanket of gases surrounding the planet is known as

Iron rusts when it comes in contact with

A reaction in which oxygen is used up for the production of thermal and light energy is known as

The atmosphere is an important part for life on

Fractional distillation consists of

Air is important because it is the prime cause of life on

When methane is combusted with oxygen, the products produced are

Sunlight is absorbed by chlorophyll in leaves, while the gaseous exchange takes place through

Respiration takes place at/in

Exhaled air contains 16% oxygen and about 4% of carbon dioxide, the rest of 80% is

The condensation point of nitrogen gas is

Oxidation is accompanied by

Other than nitrogen and oxygen, the composition of the rest of the gases is about