A Admin • 828.03K Points Coach Q. What is the level of Hydrocarbons occurring in the urban environment ? (A) 1 to 4 pmm (B) 20 - 100 pmm (C) 14 - 20 pmm (D) above 10 ppm Correct Answer - Option(A) Views: 6 Filed under category Geography Hashtags: Share Manage Tags
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