Layers of atmosphere

The layer of air surrounding the earth is

• Wind

• Atmosphere

• photosysnthesis

• Evaporation

_______________________ is the first layer of atmosphere.

• Stratosphere

• Exosphere

• Troposphere

• Thermosphere

There are _____________ layers of atmosphere.

• 2

• 3

• 4

• 5

Atmosphere consists of ____________ % of oxygen.

• 78

• 21

• 0.91

• 0.21

Which layer of the atmosphere is known as the 'ozone layer'?

• Stratosphere

• Exosphere

• Troposphere

• Thermosphere

What is the primary gas found in the Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Argon

Which layer of the atmosphere is closest to the Earth's surface?

• Stratosphere

• Exosphere

• Troposphere

• Thermosphere