Factories and Power Stations pump large quantities of ____ and other ____ into the air. This is a major cause of the ____. Some ____ gases dissolve in the atmosphere then fall to the earth as ____. This also damages trees and buildings and can kill fish in lakes and rivers. Rivers can also be polluted by ____ from factories.

Pollution

Tulosta
Upota

Tulostaulu

Visuaalinen tyyli

Vaihtoehdot

Vaihda mallia

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