what most likely caused the ice ages?\n○ the size of tree rings and the amount of pollen grains\n○ solar…

what most likely caused the ice ages?\n○ the size of tree rings and the amount of pollen grains\n○ solar flares and gassy ejections from the sun\n○ the tilt of the earths axis and the shape of its orbit\n○ the temperatures of the sun and moon

what most likely caused the ice ages?\n○ the size of tree rings and the amount of pollen grains\n○ solar flares and gassy ejections from the sun\n○ the tilt of the earths axis and the shape of its orbit\n○ the temperatures of the sun and moon

Answer

Answer:

the tilt of the Earth's axis and the shape of its orbit

Brief Explanations:

The ice - ages are thought to be caused by Milankovitch cycles which involve changes in the Earth's axis tilt (obliquity), the shape of its orbit (eccentricity), and precession. These changes affect the amount and distribution of solar radiation reaching the Earth, leading to ice - age cycles. Tree rings and pollen grains are used to study past climates but don't cause ice - ages. Solar flares and ejections affect Earth's short - term space weather. The moon's temperature has no significant impact on ice - ages, and while the Sun's temperature is important for overall climate, the Milankovitch cycles related to Earth's orbit and tilt are key for ice - ages.