The English naturalist Luke Howard devised the first widely used cloud classification system in
A) 1803.
B) 1903.
C) 1667.
D) 1856.
Answer: A
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Which of the following locations represents the null point in regard to ocean currents?
A) A
B) B
C) C
D) D
Answer the following statement(s) true (T) or false (F)
1. The barren landscape in Mediterranean regions today is partly the result of human activities. 2. The Black Triangle of chemical contamination is found along the Czech, Polish, and East German borders. 3. Russia is now a member of NATO. 4. Beginning in the 1970s the European Union (EU) invested large sums of money to improve infrastructure in lagging regions of Europe. 5. Most decisions in France are made in Paris by a very centralized form of government.
Why is the Moon still visible during a full lunar eclipse?
A) Earth's atmosphere acts as a lens that refracts light into the shadowed region. B) There is a minor component of phosphorescent minerals distributed fairly evenly on the lunar surface. C) The Moon's thin atmosphere acts as a mirror, reflecting light being cast from neighboring stars. D) Background microwave radiation becomes excited during the lunar eclipse, and shifts towards visual light, which then slightly illuminates the eclipsed moon.
Which viral disease is the biggest killer?
A. tuberculosis B. AIDS C. hepatitis B D. influenza E. West Nile