Paleoproxies are direct measurements of historical environmental variables such as temperature.
Answer the following statement true (T) or false (F)
False
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Which U.S. city has been the destination of choice for Puerto Ricans migrating to the United States?
A) New York City B) Houston C) Chicago D) Los Angeles E) Miami
Toxic metals such as lead, cadmium, and mercury
A. Usually don't accumulate in food chains B. Can be toxic if high concentrations are reached C. Are the most common health threat in water D. Can be toxic in extremely small quantities E. Rarely threaten water supplies
Compared to the private automobile, public transportation offers more
A) energy efficiency. B) flexibility. C) pollution. D) privacy. E) range.
What best explains the problem with using sediment layers to determine past climatic conditions?
A. are typically buried and not very accessible B. do not provide details on year-to-year variations C. do not go far enough back in time D. do not provide information on igneous and metamorphic rocks E. only provide information at a given location as opposed to globally