The structural material of plants is largely
A) amylopectin.
B) coal.
C) amylose.
D) cellulose.
Correct Answer:
Verified
Q45: Coal can be cleaned before it is
Q46: The United States is estimated to have
Q47: The primary element in coal is
A)carbon.
B)silicon.
C)oxygen.
D)chlorine.
Q48: The highest grade of coal is
A)anthracite.
B)bituminous.
C)lignite.
D)peat.
Q49: A substance that burns readily and releases
Q51: When coal is burned,mineral impurities are converted
Q52: A major inconvenience of coal as a
Q53: When coal is heated in the absence
Q54: When coal is heated in the absence
Q55: When coal containing sulfur is burned,the sulfur
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