EARTH'S RESOURCES

Biomass energy can be used to produce................

• wind

• electricity

• oil

Air, water and soil are earth's .............. resources.

• man made

• natural

• biomass

The process by which new products are created from old ones are called .....................

• recycle

• reduce

• reuse

The Earth is surrounded by a blanket of air called.................

• atmosphere

• weather

• environment

We all need ........................ to breathe.

• oxygen

• nitrogen

• carbon

The harmful substances in environment is known as ........................

• pollutants

• dumping

• fertilizers

....................... occurs as a result of dumping garbage,waste and other toxins on land.

• land pollution

• air pollution

• pollutants

Write 3 R'S to reduce pollution

.......................... is an example of cleaner form of energy.

• solar

• petroleum

• coal

.................... is an example of air pollutant.

• carbon monoxide

• nitrogen

• oxygen