Fossil evidence indicates that dinosaurs became extinct approximately ________ years ago.
A. 65 thousand
B. 650 thousand
C. 6,500,000
D. 65 million
E. 650,000,000
Answer: D
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________ deposits are found in streams where running water has mechanically concentrated heavy sediment such as gold.
A. Placer B. Pebble C. Lag D. Granular E. Agglomerated
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Indicate whether this statement is true or false.
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