Multiple Choice
According to most estimates,Earth is approximately
A) 4.5 thousand years old.
B) 4.5 million years old.
C) 4.5 billion years old.
D) 45 billion years old.
Correct Answer:
Verified
Correct Answer:
Verified
Q36: Radiometric dating is based on<br>A)decay of uranium-238
Q37: Life forms in the Precambrian included<br>A)trilobites.<br>B)brachiopods.<br>C)coelacanths.<br>D)cyanobacteria.
Q38: Granitic pebbles with a radiometric age of
Q39: What is the most widely accepted hypothesis
Q40: The oldest known fossils are<br>A)trilobites and brachiopods.<br>B)algae
Q42: In a sequence of rock layers we
Q43: The break-up of Pangaea had worldwide consequences-how
Q44: The numerical dates associated with events on
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