A good reflector of radiation is a
A. good absorber of radiation.
B. poor absorber of radiation.
C. good emitter of radiation.
D. none of the above
Answer: B
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The heritage industry is regulated by the United Nations to ensure architectural, historical and geographical accuracy
Indicate whether this statement is true or false.
Sustainable development differs from traditional economic development in that it emphasizes economic development in the
A. Past B. Present and past C. Short term D. Long term E. Present
If a neutral element has the following chemical symbol, how many electrons does it have? 
U
A. 82 B. 143 C. 92 D. 235 E. none of the above
Suppose you have a choice of fuels to use to heat your home. Which CO2 source produces the least carbon per unit of energy?
A. Natural gas B. Oil C. Coal