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(a) elements; (b) essential; (c) polluted; (d) smoke/pollutants; (e) filths; (f) healthy; (g) decrease/reduce (h) difficult/impossible (i) reduce (j) awareness.
Air and water are two important (a) elements of the environment. These elements are (b) essential for life on earth. They are often (c) polluted in many ways, Air is polluted mostly by (d) smoke/pollutants and water by different kinds waste and (e) filths . If we want to live a (f) healthy life, we should (g) decrease/reduce the pollution of the environment. Total prevention may be (h) difficult/impossible , but we can certainly (i)reduce pollution by raising (j) awareness among people.
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