Fine-particle pollution, mostly from older coal-burning power plants, kills how many Americans each year?
A. 5,000
B. 13,000
C. 213,000
D. 618,000
E. 924,000
Answer: B
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The reactants shown schematically below represent iron oxide, Fe2O3 , and carbon monoxide, CO. Which of the following is the correct full balanced chemical equation for what is depicted?
A. Fe2O3 + 3 CO ? 3 FeO2 + 2C
B. Fe2O3 + 3 CO ? 2 Fe + 3 C2O
C. Fe2O3 + 3 CO ? 2 Fe + 3 CO2
D. Fe2O3 + 3 CO ? 3 FeO + 2 C
Toxic metals such as lead, cadmium, and mercury
A. Usually don't accumulate in food chains B. Can be toxic if high concentrations are reached C. Are the most common health threat in water D. Can be toxic in extremely small quantities E. Rarely threaten water supplies
Instructions: Choose one answer from each pair of selections. The radiosonde uses a RADIOMETER | THERMISTOR to measure temperatures in the atmosphere
The Age of Mammals followed the K-T mass extinction.
Answer the following statement true (T) or false (F)