In the following passages at certain points you are given a choice of three words in brackets, one of which fits the meaning of the passage. Choose the word which best fits the meaning of the passage and mark the corresponding letter viz. (a), (b) or (c) on your Answer Sheet.

Passage-I. The levels of atmospheric pollution increasing in the cities and industrial areas of the world could in time change the weather patterns of the earth, raising the temperature ______ the whole planet.