Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful

and coherent paragraph.

A.The current concern is that it is rising day by day due to various resources of pollutants.

B.It has been there in different forms since a long time, even before human evolution, such as volcanic eruptions, wildfire which

led to various photochemical reactions in the atmosphere.

C.Pollution has become a very common yet serious issue in today’s world.

D.And, one of the main pollutants are humans and man-made machines.