Air

Air

9.2

Air

Air is the basic need for living things. Hence, it is an important element on earth.

Air

We are surrounded by air. Air also present in water and soil.

Air consists of gases such as oxygen and carbon dioxide.

The importance of air

1.		Living things need oxygen for breathing.

2.		Plants need carbon dioxide in order to produce their own food

Moving air

Air that moves is called wind.

The wind can give advantage and disadvantage to human's life.

Advantages of wind:-	Disadvantages of wind:-
Produce energy (Windmill & sail) Cools the surrounding temperature	Turbulence in the sea Windstorms

Air

9.2

Air

Air is the basic need for living things. Hence, it is an important element on earth.

Air

We are surrounded by air. Air also present in water and soil.

Air consists of gases such as oxygen and carbon dioxide.

The importance of air

1.		Living things need oxygen for breathing.

2.		Plants need carbon dioxide in order to produce their own food

Moving air

Air that moves is called wind.

The wind can give advantage and disadvantage to human's life.

Advantages of wind:-	Disadvantages of wind:-
Produce energy (Windmill & sail) Cools the surrounding temperature	Turbulence in the sea Windstorms