1.

In Delhi screens are put up across the city showing PM 2.5 levels as being dangerous . Particulate matter (PM) are small dust and soot particles that come out from car ecxausts . These particles are only 0.0025 millimeters thick which is thinner than the human hair! Why do you think these particles are dangerous to our body ?

Answer» In Delhi screens are put up across the city showing PM 2.5 levels as being dangerous . Particulate matter (PM) are small dust and soot particles that come out from car ecxausts . These particles are only 0.0025 millimeters thick which is thinner than the human hair!

Why do you think these particles are dangerous to our body ?


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