1. Many rare animals disappear because the loss of ____ makes it impossible for them to survive. 2. If we don’t stop air, water, and ____, future generations will have problems finding clean drinking water and fresh air. 3. The smoke from the ____ covered the sky with dark clouds, making it difficult to see the sun. 4. After years of dumping factory ____ into the lake, the water became so toxic that no fish could survive. 5. Scientists say that ____ clouds can cause serious breathing problems in big cities. 6. When fish and ____ start dying, the whole ecosystem is in danger. 7. The toxic ____ from cars and factories make the air in large cities unhealthy to breathe. 8. ____ destroyed the leaves on the trees and left ugly marks on the old buildings.

Pollution

In
Nhúng

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?