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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.

Birds evolved during the Jurassic.

Dinosaurs are examples of ____.​

Of the three rock types, igneous rocks are the best suited for radiometric dating techniques.