Which of the following trace gases is not natural to the atmosphere and is purely the result of human activities?
A) Chlorofluorocarbons (CFCs)
B) Nitrous oxide
C) Krypton
D) Methane
Answer: A
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What causes waterlogging?
A. desertification B. an excess of saltwater intrusion C. heavy rain D. erosion E. a rise in the water table from irrigation
Analyze the timeline shown. Which letter most likely represents when Earth formed?
Complete the concept map by selecting the best response for the question numbers listed.
Complete the concept map by selecting the best response for question number 5.
A. Boundaries B. Hot spots C. Centers
Mercury is the only metal which is a liquid at room temperature. The density of mercury is 13.6 g/cm3. What is the mass, in pounds, of 1.00 quart of mercury? [1 liter = 1.057 quart; 1 pound = 453.6 grams]
A) 0.0284 lb B) 28.4 lb C) 31.7 lb D) 35.3 lb