The mass extinction at the end of the Cretaceous coincides with an iridium anomaly in the stratigraphic record, suggesting:

During the __________ period, the largest mass extinction wiped out 96% of all marine invertebrates and >67% of reptiles and amphibians.

Mantle cell convection, the driving force of plate movement, is driven by:

What principle did James Hutton develop?

Which of the following terms is appropriate in a document intended for laypeople?

What is abiogenesis?

__________ dating is the method of placing geologic events in sequential order based on their position in the rock record.

Which of the following best describes the movement along a divergent plate boundary?

“Megafauna”, or large Pleistocene animals, likely evolved and adapted to glaciated conditions.

Consider Lange’s Migrant Mother. Identify the decade in which this photograph was made. Define and discuss the purposes of photojournalism, using the work of this photographer as an example of the process by which a photojournalist works to document not just a single image but an historical epoch.