Question

In 1992 and 1993 what was cause of methane concentration downfall in atmosphere?

a.

Closing down of Siberian Pipline

b.

Russian Recession

c.

Afoestation

d.

Mining

Answer: (a).Closing down of Siberian Pipline

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Q. In 1992 and 1993 what was cause of methane concentration downfall in atmosphere?

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