Most of the region surrounding the North Pole is covered by ________
A) land
B) permafrost
C) ice pack
D) ice floes
E) tundra
Answer: C
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Why is the anode of a battery indicated with negative (-) sign?
A) because that is where electrons are being generated B) because it is negative C) because it is positive D) because that is where electrons are being adsorbed E) It is just a convention so the batteries are put in the MP3 player correctly.
The language of the Koran is
A) Farsi. B) Urdu. C) Hebrew. D) Arabic.
Which of the following is the correct order of priorities in the R,S system?
A) butyl < ethyl < methyl < propyl B) propyl < methyl < ethyl < butyl C) butyl < propyl < ethyl < methyl D) methyl < ethyl < propyl < butyl
How much carbon dioxide was present in Earth's atmosphere 4 billion years ago?
A. Much more than now B. About the same amount as now C. Much less than now