multiple choice question

Which of the following gases protects us from harmful sun rays?

• nitrogen

• carbon dioxide

• ozone

• all of these

Ozone layer is found in

• troposphere

• stratosphere

• thermosphere

• mesosphere

What is the primary function of the ozone layer?

• To regulate temperature

• To provide oxygen

• To absorb UV radiation

• To trap greenhouse gases

Which is the most important layer of the atmosphere?

• troposphere

• thermosphere

• mesosphere

• none of these

Which gas is primarily responsible for the greenhouse effect?

• carbon dioxide

• oxygen

• helium

• argon