Most limestone is of biochemical origin
Indicate whether the statement is true or false
True
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The mantle is composed of pure nickel and iron
Indicate whether this statement is true or false.
The permafrost areas of Russia are one of the few areas that would not be affected by global warming due to the cold conditions that prevail yearlong at this high latitude
Indicate whether the statement is true or false
Which is most likely true for an atom with one valence electron?
A) It will gain one electron. B) It will gain two electrons. C) It will lose one electron. D) It will lose two electrons.
Investment in improved transportation and communication systems is usually done with the intent to
A) increase economic growth. B) increase tax revenues. C) increase transportation costs. D) increase regional divides.