Atmospheric pollution is the worst when
A. coal is burned.
B. uranium undergoes fission in a nuclear reactor.
C. natural gas is burned.
D. geothermal heat is used to generate electricity.
Answer: A
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Which of the following would be the best method for obtaining a numerical age for sedimentary rocks?
A) Observe any unconformities within the area. B) Radiometrically age-date metamorphic rocks near the sedimentary rocks. C) Use radioactive isotopes in sediment grains contained within the sedimentary rock. D) Relate the sedimentary rocks to a datable igneous mass, such as a dike or sill.
Chromium-51 decays by electron capture. What isotope is formed when 51Cr decays in this way?
A) 50Cr B) 52Cr C) 51Mn D) 51V
Describe the number of high and low tides in a lunar day, including the period, and any inequality of diurnal, semidiurnal, and mixed tide types
What will be an ideal response?
If thunderstorms bring repeated heavy rain to a region for days or weeks, the result can be one or more ____________________ floods
Fill in the blank with correct word.