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Black shale formation was driven by specific conditions, including _______ organic content and water with ________ free oxygen.

What happened to ocean circulation after the break up of Pangaea?

The Franciscan Complex, unique because it has sedimentary, igneous and metamorphic rocks, formed during the _________ orogeny.

Deltas form when streams or rivers encounter a standing body of water, such as an ocean or lake.

Organisms that live above the sea floor in the water column are found in the pelagic zone of the marine environment.

What flowering plants dominated the land ecosystems during the Late Cretaceous?

During the Cambrian, most of the Earth’s land was located in the Southern Hemisphere.

During the Mesozoic, sea levels were higher than present day.

None of the reptiles from the Cretaceous period survived the end-Cretaceous mass extinction.

Glacial environments are an example of a transitional depositional environment.