Smelting is a major source of air pollution which involves
A. mechanically removing metals from ores.
B. roasting ores to release metals.
C. washing ores at high pressure to release metals.
D. None of these choices are correct
Answer: B
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What is La Niña?
a. A warmer than normal circulation event b. A circulation due to density and salinity c. A colder than normal circulation event d. The result of volcanic eruptions
Clouds form by the process of
a. ?sublimation b. ?condensation c. ?evaporation d. ?deposition e. ?both deposition and condensation.
Mountain belts are characterized by sedimentary sequences that show little or no deformation.
Answer the following statement true (T) or false (F)
Rooftop photovoltaic electrical general remains far more expensive than power line construction to rural areas
Indicate whether the statement is true or false