What is the evidence that the Younger Dryas occurred?
A) proxy temperature records from fossils
B) ice core samples from Greenland
C) temperature records from numerous monitoring stations
D) both A and B
Answer: D
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Which of the following is a wind deposit?
a. Alluvial fan b. Bajada c. Yardang d. Playa e. Barchan dune
The doubling time of some of the world periphery's largest, fastest growing cities is
A) 6-12 months. B) 10-20 years. C) 50-70 years. D) 100-150 years.
In which of the following situations would swimmers find the warmest waters at the beach?
A) winter off the north coast of Alaska B) Los Angeles in summer with an on-shore wind C) Los Angeles in summer with a Santa Ana wind D) just north of San Francisco in summer
Sodium chlorate, an ingredient in many common herbicides, has sodium, chlorine and oxygen atoms in the ratio 1:1:3. What is the correct formula for sodium chlorate?
A) NaCO3 B) SoClO3 C) NaClO3 D) none of these