review e8

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

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

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

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

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

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

Forests help release oxygen and absorb (a)  

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

A number of cleaning products contain (a)   chemicals

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