Our best estimates for the age of Earth come from rocks collected from the Moon and from ________.
A. unconformities in the Grand Canyon
B. fossils
C. minerals in Australia
D. rocks in Canada
E. meteorites
Answer: E
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If the rate at which we produce CO2 were to stop rising, the levels of CO2 in the atmosphere would
A) eventually level off. B) continue to rise. C) decrease as CO2 is absorbed by plants, soils, and the oceans. D) This cannot be reasonably predicted.
As you move from the Appalachian mountains towards the Atlantic Ocean, the depositional layers of sediments
beneath you ____. a. remain a constant thickness b. gradually become thicker c. gradually become thinner d. rapidly become thicker e. rapidly become thinne
Geologists are correlating past geologic events to see if there are correlations with climate changes
Indicate whether the statement is true or false
What general term denotes a buried, erosional surface where rock layers are missing?
What will be an ideal response?