Which of the following is a way in which humans pay directly for the ecosystem services forests provide?
A) flood prevention
B) biodiversity
C) ecotourism
D) water purification
E) carbon storage
C
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Lowering combustion temperatures in furnaces
A. increases emission of lead and sulfur. B. has no effect on air-pollution emissions. C. reduces particulate pollution. D. reduces production of nitrogen oxides.
At present, after subtracting deaths from births, world population increases 1.2 percent per year for a doubling time of ________.
A. 140 years B. 14 years C. 280 years D. 70 years E. 58 years
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
If you have enough energy to melt 1 gram of ice and then change it to vapor, then you also have enough energy to complete what other phase change for the same gram of ice?
What will be an ideal response?