We are the caretakers of the earth. We know that ____ air, water and land are ____ to plants, animals and people. In Russia there are a lot of regions which are severely polluted. It is plants that pollute our atmosphere with tons of harmful substances. These are very dangerous ____ They go into the air and are carried by winds for great distances.60% of the ____ pollution is caused by different means of transport: cars, trucks, buses. Then we must remember that when we use aerosol sprays, we ____ the ozone layer which ____ the Earth from the dangerous ultraviolet rays of the sun.

environment

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