B:hydrogen
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Which element is NOT part of the molecular formula of carbohydrates?
A:Carbon
B:hydrogen
C:oxygen
D:nitrogen
Answers: 2
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In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls
Answers: 1
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Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Which element is NOT part of the molecular formula of carbohydrates?
A:Carbon
B:hydrogen
B:hydrogen
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