environment

 Complete the sentences using the right word:

Environmental protection is an __________ problem.

Every ten minutes one kind of animal, plant or insect __________

We should .... glass, paper and plastic.

Scientists......................... to reduce pollution from automobiles and

factories.

......... is a result of industrial revolution in the 20th century.

The use of recycled paper..........our trees and forests.

People wouldn’t need to ..... their cars so much then and our cities would be ....... places to live in.