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

Environmental & Atmospheric Sciences

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Divergent evolution results in descendants with characteristics that are very similar to their ancestors’ characteristics

a. True b. False

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What sedimentary structure is illustrated in this photograph? What direction (toward the left or the right) were sediment-transporting currents flowing when the sediment was deposited?

What will be an ideal response?

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How are the location patterns of earthquakes, volcanoes, and fault lines in North America related to its tectonic plate boundaries?

What will be an ideal response?

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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

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