Global Temperature Variations on Earth Driven by the Milankovitch Cycle

Multiple Choice

Global temperature variations on Earth driven by the Milankovitch cycle differ from those driven by the anthropogenic greenhouse effect in that

A) they are very small in magnitude, less than 1°C.
B) they occur at irregular time intervals.
C) they are driven by volcanic activity.
D) they occur over much longer timescales (thousands of years) .
E) they are driven by emissions of methane gas rather than carbon dioxide.