Question 1
A major site of sediment deposition during the Cenozoic was ________.
◦ the central U.S.
◦ central Texas
◦ the western coast of the U.S.
◦ the Rocky Mountains
◦ the Gulf of Mexico
Question 2
What organic compounds are essential for DNA and RNA to form?
◦ ammonia and methane
◦ carbon dioxide
◦ oxygen
◦ hydrogen sulfide
◦ amino acids