Look at the pairs of words. In each pair there is a word you know. Read sentences below and guess what the other word in each pair means. dump to dump waste to waste diet to diet environment environmental pollute pollution polluted unpolluted protect protection 1) Animal protection is a necessary thing nowadays. 2) People often du waste in the forests but they shouldn't do it. 3) Don't waste your ti Do something useful. 4) Would you like some cake, Jane? No, than I am dieting. 5) Nowadays we have a lot of ecological environmen problems. 6) The rivers in this part of the country are unpolluted. 7) P lution is a bad disease of our century.