Anh

Many ________ animals have been saved thanks to community efforts.

• dangerous

• endangered

• generous

• natural

The gradual rise in the Earth's temperature is known as ____.

• greenhouse effect

• global warming

• ozone layer

• acid rain

Air pollution is a ____________of fossil fuel burning by motor vehicles, factories, aircraft and rockets.

• product

• example

• harm

• consequence

Thousands of acres of forest are being cut down every year and the ____ of many animals are being destroyed.

• natural resources

• natural habitats

• ways of life

• living surroundings

The council has _____________ ideas to help manage traffic.

• come up with

• taken part in

• made up with

• raised awareness of

High levels of pollution can upset the ____________ of an ecosystem.

• average

• substance

• reason

• balance

Pollution can have serious effects_________ the balance of ecosystem.

• in

• on

• to

• for

Environmentalists are furious with the American Government for delaying measures which will reduce greenhouse gas ____.

• exhaust fumes

• smokes

• wastes

• emissions

The loss of forests can have a ________impact on the environment.

• positive

• giant

• negative

• practical

Ba said he__________ some good marks the semester before.

• gets

• got

• had gotten

• have got