How Is The Composition Of The Atmosphere Changing?

1.	How Is The Composition Of The Atmosphere Changing?
Answer» Greenhouse GAS concentrations in the atmosphere have risen RAPIDLY during the PAST two CENTURIES. Greenhouse gas concentrations in the atmosphere have risen rapidly during the past two centuries.

Answer»

Greenhouse GAS concentrations in the atmosphere have risen RAPIDLY during the PAST two CENTURIES.

Greenhouse gas concentrations in the atmosphere have risen rapidly during the past two centuries.

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