Scientists have attempted to measure historical temperatures by collecting data from various sources. Four of these five answers are examples of such sources; select the exception.
A. radioisotopes in rocks and sediments
B. pollen grains
C. ice cores
D. gold veins
E. tree rings
Answer: D
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a. True b. False
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When a tsunami reaches shore, ____
A) the wave height greatly increases B) the wave period greatly decreases C) the wave will appear as a single huge breaking wave D) it will always race hundreds of meters inland