During metabolism water combines with ________ to produce glucose and ________.
A) oxygen; carbon dioxide
B) carbon dioxide; oxygen
C) carbon; methane
D) methane; hydrogen
Correct Answer:
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Q45: Humans are
A)photoautotrophs.
B)photoheterotrophs.
C)chemoauthotrophs.
D)chemoheterotrophs.
Q46: Given the surface waters on Mars were
Q47: How many major mass extinction events have
Q48: The second major rise in oxygen in
Q49: The first hominids appeared _ years ago.
A)50
Q51: Scientists believe that early Earth's atmosphere was
Q52: Which chemical compound makes up 50 percent
Q53: Of the following,humans are most related to
A)cyano-bacteria.
B)methano-bacterium.
C)slime
Q54: Modern stromatolites are typically found in what
Q55: _ is a mineral found on the
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