Crossword Puzzle Pollution of Air and WaterOnline version Crossword puzzle on Pllution by LEENA KADU 1 Pollutant which was used in refrigerators and air conditioners 2 Produced on incomplete combustion of fuels. 3 The chemical which protects our crops in fields 4 Disease which is caused by drinking contaminated water. 5 It is essential for combustion 6 This layer protect us from harmful ultraviolet rays. 7 River which is famous in India and sustain most of the northen, central and eastern Indian population. 3 6 1 7 5 4