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Its the most dangerous threat we are facing today.. We should together do something about it.

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Pollution in metro cities...

Pollution in metro cities...

ARTICLE_POSTED_BY Jess Davis     2017年11月16日     4,177 views     0 likes     1 comment
ARTICLE_TAGS - #pollution #metro
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Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or non point source pollution.

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