Q32Long answer
Complete the crossword puzzle with the help of clues given below: Fig. 18.1 P OLLUTION O F AI R AND WATER 109 Across Down 1. Pollutant which was used 2. This layer protects in refrigerators and air us from harmful conditioners. (18) ultraviolet rays. (5) 3. Produced on incomplete 4. It is essential for combustion of fuels. (14) combustion. (6) 5. Disease which is caused by drinking contaminated water. (7) 6. This chemical protects 7. River which is famous our crops and is in India and sustains washed into water most of the northern, bodies from the field. (9) central and eastern Indian population. (5)
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