Wasteater
See Answer
1: (b) Houses, 2: (a) Factories, 3: (a) Sedimentation, 4: (c) Human Waste, 5: (d) Chlorination, 6: (c) Cholera, 7: (a) Liver, 8: (d) Reverse osmosis, 9: (c) Colourless, 10: (a) Groundwater
excellup
Class 7 Science Quiz
1: (b) Houses, 2: (a) Factories, 3: (a) Sedimentation, 4: (c) Human Waste, 5: (d) Chlorination, 6: (c) Cholera, 7: (a) Liver, 8: (d) Reverse osmosis, 9: (c) Colourless, 10: (a) Groundwater