Write a short note on air pollution

Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals __________ _____ ____ ___ _________ ____ _________ ______ _________ ______ _________.
____ _______ ________ _______ ________ _________ _____ ___ ____ ______.
______ __________ _______ __________ __________ __________ _______ ____ ______ __________.
_____ _____ ___ ______ ___ _______ ____ ______ __________ _________ __________.
________ ________ ______ ________ ________ _________.
__________ ____ ________ ______ _____ __________ ______.
________ __________ ___ ______ __________ ___ _______ ______.
________ _________ ________ _______ ___ _______ ______ __________ _____ _______ ____ _____.
_________ __________ _________ ________ _________.
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