The Milankovitch cycles may have changed Earth's climate in the past. These cycles involve _____.
A). volcanic activity on Earth
B). plate tectonics
C). Earth's tilt and orbit
D). sunspots
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D). Sunspots
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D).suns pots
Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. Sunspots usually appear in pairs of opposite magnetic polarity
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