Which of the following is characterized by parallel-orientated minerals, commonly mica?
a) schist
b) granitic gneiss
c) greenstone
d) pyroxenite
e) marble
Answer: a) schist
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Which of the following statements best describes the first life-forms on Earth, which existed about 3.6 billion years ago?
A. The first microbial life forms were restricted to what is now the Middle East. B. Microbial life began at the same time the Earth turned into a solid. C. Evidence for the first microbial life forms is found in igneous rocks. D. Microbial life evolved rapidly into more complex life forms in only a few hundred million years. E. Microbial life began at a time when the planet's atmosphere and climate were very different from today.
Which air pollutant can cause cancer in humans?
A. benzene B. methane C. ozone D. sulfuric acid
What is the longest river on Earth?
A. Mississippi B. Colorado C. Nile
Which of the following molecules would probably be isolated closest to the bottom of a fractionating tower at a refinery?
A. C20H42 B. C8H18 C. C4H10 D. C40H82 E. C10H22