Potential test question for test 2, Proterozoic

Stromatolites are photosynthetic, T or F?

What was the first animal? What rock type are they found in?

Where were significant oxygen levels accumulated first, ocean or atmosphere?

What are some advantages of multicellular life?

What was the first supercontinent called? What is Laurentia?

What is the evidence of glaciers in the Proterozoic?

What is an orogeny?

What is the evidence of increased oxygen in the oceans? In the atmosphere?

What are two ways oxygen gas came to be on Earth? Which is the most significant source?

Where were the first life forms living?

Which came first, prokaryotes or eukaryotes? What is the difference between the two? What are the oldest prokaryotes in the rock record?

BIF's are layers of chert and limestone: T/F

What is BIF and where was it formed?