A probability forecast that calls for a "40 percent chance of rain" means that?
a. ?there is a 40 percent chance that it will not rain within the forecast area.
b. ?there is a 40 percent chance that any random place in the forecast area will receive measurable rain.
c. ?it will rain on 40 percent of the forecast area.
d. ?it will rain during 40 percent of the time over the forecast area.
e. ?it will definitely rain.
ANSWER: b
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Why was Indonesia so poor when it gained its independence from the Dutch in 1949?
A) Civil war drained resources and stifled manufacturing. B) Indonesia had no marketable products. C) The Dutch had used Indonesia largely for its tropical crops and invested little in transportation, health, or education in the region. D) It suffered several years of drought and famine. E) Indonesia had accumulated high levels of international debt.
Alternative energy sources
A. are all renewable (except for nuclear energy). B. are sources of electricity and heat that emit little or no carbon dioxide. C. include solar, geothermal, biomass, and nuclear. D. All of these
Pumice and scoria both exhibit a vesicular texture.
Indicate whether the statement is true or false.
What material is used to store heat in a concentrated solar power plant?
A. Molten salt B. Magma C. Steam D. Molten iron