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Everyday Science Everyday Science Difficulty: Medium

The main cause of air pollution is __________?

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More Everyday Science Questions

What is the number of known crystalline phases of water ________? Which is the purest form of water? The chemical name of “Acid” (Tezaab) is___________? Which one of the following of glass can cut ultraviolet rays? Name the branch of science which deals with the study of sound and sound waves?