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What were the two sources of surface water on early Earth?

The Tethys Sea closed as _______ moved northward, eventually forming the Mediterranean Sea.

The earliest atmosphere was likely composed of ___________ and __________.

As demonstrated by Stanley Miller’s experiments, what are two possible energy sources for the synthesis of organic molecules?

During the Mesozoic, what natural resource(s) formed and accumulated?

Which continent did not have glaciers during the Neoproterozoic glaciations?

Volcanic island arcs along the west coast of North America moved _________ during the Cretaceous period.

Since its formation, the Moon has been slowly moving towards Earth.

The name ‘dinosaur’, meaning “fearfully great lizard”, was proposed by Charles Darwin.

In order for evaporites to form, _________ temperatures and _________ evaporation conditions are required.