What of the following is considered to be the most likely cause of the Quaternary Ice ages?
A)human activity releasing "greenhouse" gases
B)plate tectonics moving continents to polar regions
C)variations in the earth's orbit
D)variations in the Sun's intensity

Question

Quizplus · Accepted Answer

Variations in the earth's orbit are the most likely cause of the Quaternary Ice Ages. This is due to Milankovitch cycles, which are changes in the earth's orbit and axial tilt that occur over thousands of years. These changes lead to variations in the amount and distribution of solar radiation the earth receives, which affects global climate and can lead to Ice Ages. Human activity releasing "greenhouse" gases can contribute to climate change, but it is not the primary cause of the Quaternary Ice Ages. Plate tectonics moving continents to polar regions and variations in the Sun's intensity can also affect global climate, but they are not the most likely cause of the Quaternary Ice Ages.

What of the Following Is Considered to Be the Most