During the past few million years, ice ages were MOST LIKELY caused by

Question

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The most likely cause of ice ages during the past few million years is small changes in the Earth's axis tilt and orbit, which affect the amount and distribution of solar radiation reaching the Earth's surface. These changes occur over tens of thousands of years, and lead to variations in the amount of sunlight received by different parts of the Earth, which can trigger the growth or retreat of glaciers and ice sheets. While changes in the distance from the Earth to the Sun (A) and the energy output of the Sun (D) can also influence the climate, they are not the primary drivers of ice age cycles. There is no evidence to suggest that changes in the heat released from the Earth (C) have a significant impact on the global climate system.

During the Past Few Million Years, Ice Ages Were MOST