In which of the following molecules will water induce a temporary dipole?
A. O2
B. N2
C. CO2
D. all of the above
E. none of the above
Answer: D
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A sizeable percentage of the population of the former British colonies of Trinidad and Tobago and of Guyana claim ancestry from which region?
A) South Asia B) West Africa C) China D) United States E) Australia
In clear weather, the air next to the ground is usually ____ than the air above it at night, and ____ than the air above it during the day
A) cooler; warmer B) colder; colder C) warmer; colder D) warmer; warmer
What evidence did James Hutton use to discount the biblical account of the Creation of Earth?
A) The erosion rates of streambeds B) The distribution of sediments in rivers C) The patterns of rocks found in the countryside D) All of these choices
Xeriscaping is a water conservation technique commonly used in landscaping. What best describes xeriscaping?
A. use of x-rays to reduce evaporation B. use of high-water content soils C. replacing porous surface materials with solid surfaces D. use of native vegetation E. use of low-evaporation soils