GEOLOGY

Detailed explanation-1: -Glacial-Interglacial Cycles During cold-climate intervals, known as glacial epochs or ice ages, sea level falls because of a shift in the global hydrologic cycle: water is evaporated from the oceans and stored on the continents as large ice sheets and expanded ice caps, ice fields, and mountain glaciers.

Detailed explanation-2: -During a glacial, sea levels drop an average of 100m as water is evaporated and stored in the growing glaciers and ice sheets. During an interglacial, sea levels rise as ice sheets and glaciers melt with the increase in temperature, thus resulting in an increase in volume of the ocean as water is heated.

Detailed explanation-3: -What causes glacial–interglacial cycles? Variations in Earth’s orbit through time have changed the amount of solar radiation Earth receives in each season. Interglacial periods tend to happen during times of more intense summer solar radiation in the Northern Hemisphere.

Detailed explanation-4: -Glacial-Interglacial Cycles As the climate warmed, sea level rose because the melting North American, Eurasian, South American, Greenland, and Antarctic ice sheets returned their stored water to the world’s oceans. During the warmest intervals, called interglacial epochs, sea level is at its highest.