Twenty centimeters of precipitation fell in one day on a southern city in the 100 years climatic records were kept in this city. This rainfall event ranked 5th among all one day precipitation events for this city. The return period for this extreme rainfall event would be
A. 5 yrs.
B. 20 yrs.
C. 4 yrs.
D. 100 yrs.
Answer: B
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A. mosquitoes. B. houseflies. C. viruses. D. bacteria. E. protozoa.
Why was Irish Bishop James Ussher so far off about the age of Earth?
A) He based his estimation on the literal interpretation of the Bible. B) He was a bit off on his calculations. C) He did not account for the fact that Earth cools in more ways than just one. D) He was correct.
Use your knowledge of plate boundaries to answer whether an earthquake is likely or unlikely to occur at the location of the red circle.
A. likely B. unlikely
The United States imports most of its oil from these countries
A. Canada, Saudi Arabia, Venezuela, and Mexico. B. Iraq, Iran and Nigeria. C. Nigeria and Russia. D. United Kingdom and Norway.