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The world's oceans are so vast that they (1) _______ cope with the present levels of pollution. However, little is known about the long term (2) _____ of such slow poisoning. the most serious problem of modern time is (3) _______ man is destroying the earth's natural resources and transforming huge areas (4) _______ wasteland. As a result, it is becoming extremely difficult to grow enough (5) ______ feed the world's rapidly increasing population. A way of protecting all wildlife on the earth must also be found as species are in (6) ______ of disappearing completely (7) _______ the face of the earth. The dangers (8) ______ are not confined solely to the land and the sea. The smoke in the atmosphere, for example is increasing so (9) ______ that the amount of sunlight has been reduced in many cities. Man's whole environment is being changed in a serious (10) ______