review e8

We should (a)   our carbon footprint to protect the environment.

• pollute

• protect

• reduce

• endanger

You should turn off devices that you are not using to (a)   electricity.

• save

• reuse

• release

• turn

"Carbon footprint" is the amount of carbon dioxide that we (a)   into the environment.

• stop

• plant

• recycle

• release

People shouldn't throw away single-use products but (a)   them.

• endanger

• recycle

• protect

• pollute

They can (a)   campfires on the beach near the hotel.

• volunteer

• cut

• build

• litter

The people in my village often (a)   down trees to build houses.

• cut

• pollute

• avoid

• release

Forests help release oxygen and absorb (a)  

• carbon dioxide

• global warming

• environmental protection

• water pollution

We can take part in activities like picking (a)   and planting trees to protect nature and the environment.

• up

• about

• down

• to

A number of cleaning products contain (a)   chemicals

• safeful

• helpful

• harmful

• hopeful

The gases from the exhausts of cars have also increased (a)   pollution in most cities.

• Air

• Water

• Soil

• Noise