The shift from using wood as a source of fuel to coal was caused by
A. the start of World War I.
B. a decline in local supplies of wood.
C. a decrease in coal prices.
D. an increase in wood prices.
Answer: B
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What is the approximate mass of a carbon atom in atomic mass units (amu)? How about a carbon dioxide molecule?
A. A carbon atom has a mass of about 12 amu. Carbon dioxide would then have a mass of 44 amu. B. A carbon atom has a mass of about 12 amu. Carbon dioxide would then have a mass of 28 amu. C. A carbon atom has a mass of about 6 amu. Carbon dioxide would then have a mass of 22 amu. D. A carbon atom has a mass of about 6 amu. Carbon dioxide would then have a mass of 32 amu.
Based on the history of the world-system, once a country is in the periphery, it always remains in the periphery
Indicate whether this statement is true or false.
Name three features of North America during the Last Ice Age
What will be an ideal response?
The Matterhorn Mountains of Switzerland are some of the tallest mountains on earth with peaks reaching over 24,000 feet
Indicate whether the statement is true or false