Which of the following natural threats to human health is least predictable, meaning that there is usually the least amount of lead time before a disaster?
A) Earthquakes, tsunamis, and tornados
B) Forest fires
C) Hurricanes and floods
D) Severe snowstorms
A
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To increase the temperature of 1 gram of ice-cold ice to 80°C requires
A. 800 calories. B. 540 calories. C. 40 calories. D. none of the above
In 1800, the core of the world-system was located in
A) North America. B) Japan. C) western Europe. D) the countries surrounding the Mediterranean. E) China.
A keystone species
A) has a disproportionately large impact on the stability of an ecosystem. B) typically reduces overall biodiversity of an ecosystem. C) is typically an herbivore. D) is an example of amensalism.
A 2003 study reported that ________% of large-bodied fish and sharks were lost in the first decade of industrialized fishing
A) 20 B) 40 C) 90 D) 50 E) 10