The largest earthquakes occur in ____
a. ?divergent zones
b. ?rift zones
c. ?sand boils
d. ?subduction zones
e. ?intraplate zones
ANSWER: d
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When did the harvesting of commercial whale species cease?
a. When the International Whaling Commission formed b. When there were substitutes for the products produced from whales c. When the hunting of whales became uneconomical d. CITES- Convention on the International Trade of Endangered Species
Within the U.S., most people are fleeing the South and West and moving to the Northeast and Mid-West
a. True b. False Indicate whether the statement is true or false
A parcel of air at 25°C is completely saturated with a vapor pressure of 30 mb. Cloud formation removes water vapor from the atmosphere resulting in a new vapor pressure of 15 mb at the same temperature of 25°C. What is the relative humidity of the parcel of air at 25°C and 15 mb?
A. 50 mb B. 15 mb C. 50% D. 15%
The discharge of mercury and dioxins (both HAPs) is decreasing.
Answer the following statement true (T) or false (F)