 82  Man_|А13| to make his life easier for many centuries. In doing so, he _ polluting the world we live in. In this world around us there are two things that do not belong to any one country; air and ocean water, there is much pollution. People_(A16j about the air and the water used by everyone. One of the most important pollution problems_|AI7| in the oceans. Many ships sail in the ocean water — fishing ships, some ships carrying people, some transporting oil. If a ship |A18| some of the oil in the water or trash from the ships_[A19| into the ocean, the water_|A20j dirty. Many fish_lA2l| in the sea, others_|A22 contaminated. The second important problem is air pollution. Cars and factories pollute the air we use. It also destroys the ozone layer which protects the Earth from the dangerous light of the Sun. If we want our children_|А23| in the same world we live in, or in a better and healthier world, we must leam to protect the water, the air and the earth from pollution. А14| machines and instruments. They_|A15| and
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