Impure air is also known as ______

Air has colour.

Air is required only for human being

By cutting down more trees we can control air pollution.

We breathe in ______gas.

_____helps to clean air.

We can feel air.

Air helps to generate_____

Aeroplane and gliders require ____to fly.

______is emitted by the vehicles and factories.

We should breathe in ______air.

Storm can ______the trees.

Plants use____to make food.

Wind helps to move the yatch.

______air is called wind.

Smoke mixes with air and makes it _____

Very strong wind is called ______

Wind vane helps to tell the ______

We should not plant trees around us.