For life to have existed continually on the Earth for the past 4 billion years, the oceans must have been

Question

Quizplus · Accepted Answer

The Earth's temperature has varied throughout its history, but overall it has remained within a range that has allowed for the oceans to be partially liquid for most of the past 4 billion years. This is supported by geological evidence such as the presence of sedimentary rocks and fossils that indicate the presence of liquid water and life throughout much of Earth's history. While there may have been periods of glaciation and thawing, the overall stability of the Earth's temperature has allowed for the persistence of liquid oceans.

For Life to Have Existed Continually on the Earth for the Past