Read the following passage and mark the leter A, B, C, or D on your sheet to indicate the correct word or phrase that best fits each of the numbered blanks. Does the Earth have enough resources to support the overpopulation? Different scientists give different answers to this question. However, recently scientists have become extremely (26) about the world's population. The problem is particularly acute in the underdeveloped countries. Unfortunately, the natural (27) for the support of the increasing population. But the replacement of these resources by becoming inadequate are artificial products is not always possible. Therefore, it is necessary (28) these valuable resources for as long as possible. Although the utilization of artificial products is often (29) this is particularly so in agriculture. For without fertilizers it would be impossible to increase food production, even though there is a (30) of pollution by their use. One is left with the unsolved problem of larger populations requiring more and more B. pleased C. excited D. satisfied Question 26: A. worried C. sources D. environment Question 27: A. products B. resources D. conserved C. conserving C. differently C. benefit B. to conserve Question 28: A. conserve D. difference B. different Question 29: A. differ D. risk Question 30: A. purpose B. prohibit Read the following passage and mark the letter A, B, C, or D on your answer sheet to