Over the past 3 million years, sea level has been as much as 400 feet lower and 100 feet higher compared to today.

Question

Quizplus · Accepted Answer

This is true, as the Earth has gone through multiple periods of glaciation and warming over the past 3 million years, which have significantly impacted sea level. During glacial periods, much of Earth's water is locked up in ice sheets, causing sea level to drop, while warmer periods lead to melting ice and rising sea levels.

Over the Past 3 Million Years, Sea Level Has Been