Air is a mixture of many gases along with water vapour and dust particles.

• True

• False

Air is ____________. We can only feel it.

• visible

• invisible

A layer of air that surrounds the earth is called the _______________

• atmosphere

• weather

Air is only needed for breathing.

• True

• False

_________ pollution can cause respiratory diseases.

• Air

• Water

Using ______________ can reduce the air pollution.

• car pool

• individual vehicles

Air pollution harms plants and animals too.

• True

• False

How do you prefer your surrounding to be?

• 
• 

______________ leaves and garbage causes air pollution.

• Disposing

• Burning

When air is polluted, it becomes _____________ for us to breathe.

• difficult

• easy