The Arctic Tundra Will Begin to Release Large Amounts of the Greenhouse

Multiple Choice

The Arctic tundra will begin to release large amounts of the greenhouse gas methane

A) because there is a great deal of gas and oil in the tundra region that will release methane when exploration for these resources begins.
B) as the Arctic warms, tundra peat will thaw and decay, releasing methane.
C) as the Arctic warms, the vegetation will change to plants that release methane.
D) carbon dioxide will be converted to methane by fungi.