The temperature at which water boils depends mainly on
a. air temperature
b. relative humidity
c. air pressure
d. air density
e. the specific heat of air
ANSWER: c
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The use of Gross National Product as an indicator of economic well-being
A. Is criticized as an inaccurate measure of the quality of life B. Predicts ecological bankruptcy through recognition of decreased natural capital C. Reflects social welfare D. Takes into account life expectancy E. Does not take into account economic activity overseas
The strongest winds within a hurricane occur
A) in the eye. B) in the eyewall. C) in the spiral rain bands. D) at the outer edges of the storm.
The occurrence of contact metamorphism would be direct evidence for
A) cementation of sedimentary rock. B) the local intrusion of magma. C) regional plate collision. D) lithification of clastics.
The trickling-filter system and the activated-sludge systems in wastewater treatment both require
a. the addition of large amounts of chlorine to kill pathogens. b. the addition of large amounts of ammonia as nutrients to support decomposers. c. high levels of oxygen to promote aerobic decomposition. d. high levels of carbon dioxide to adjust the pH of the water for bacterial action.