Which of the following is NOT a volatile organic compound?
A. Chlorofluorocarbons
B. Terpene
C. Formaldehyde
D. Benzene
E. Methane
Answer: A
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While out in the western United States on a field trip, you collect some beautiful specimens of
petrified wood. You are probably collecting petrified wood in this Jurassic formation:a. Chinle d. Sundance b. Morrison e. Wingate c. Navajo
What is the main limitation of life on the deep seafloor?
a) low food supply b) low oxygen c) low temperature d) high pressure e) low light
Which of the following statements best describes how this object may have formed?
A. A star ejected its outer envelope of gas and plasma. B. Interstellar gas and dust accumulated due to gravity. Some pockets had enough mass to cause star formation. C. A supernova exploded, probably from the late-stage evolution of a high-mass star. D. Material accumulated into a sphere because of gravity, and it underwent nuclear fusion of hydrogen.
This secondary pollutant is the source of most acid precipitation problems in the Northeast: ________
Fill in the blank(s) with the appropriate word(s).