Which is least dense?
A) Oceanic lithosphere
B) Mantle
C) Continental lithosphere
D) Asthenosphere
Answer: C
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What is a region in the atmosphere where air temperature remains constant with height?
A) temperature inversion B) jet stream C) isothermal zone D) hypoxic zone
Quick clays are among the least mobile of all deposits and so provide favorable building sites.
Answer the following statement true (T) or false (F)
A study of South African villages found that men, especially those 50 years of age or older, tended to have an extensive knowledge of __________ for medicines.
A) forest herbs B) lowland herbs C) plant resources D) natural oils E) chemicals
During its orbit the earth's maximum distance from the sun is approximately 152 million kilometers. Which of the following is the correct way to express this number in scientific notation?
A) 1.52 x 10^5 B) 1.52 x 10^6 C) 1.52 x 10^7 D) 1.52 x 10^8