Planetwide, a balance of chemicals is maintained by ________
A) negative feedbacks
B) cycles
C) seasonal patterns
D) solar radiation
E) decomposition
Answer: B
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Which of the following could be used to separate the components of a mixture of ethyl alcohol (ethanol) and water?
A) pouring the liquid off the solid B) distillation C) filtration D) none of these
Where and when did the first department stores open?
A) London in 1815 B) New York City in the 1850s C) Tokyo (then Edo) in the early 1800s D) Paris in the 1830s E) Constantinople in the 1780s
Which of the following is NOT a characteristic of tropical climates
A) Unstable air masses B) Consistent day lengths C) Warm ocean temperatures D) Short, though relatively mild, winters
Which of the following is not one of the three paths taken by incoming solar radiation?
A) Radiation passes through the atmosphere and is absorbed by the surface. B) Radiation is deflected by the magnetic field. C) Radiation is reflected back into space by clouds, atmosphere, snow, and ice. D) Radiation is absorbed by clouds and atmospheric gases.