Given the surface waters on Mars were likely very acidic,scientists surmise that the organisms that could have survived would likely be
A) extremophiles.
B) thermophiles.
C) autotrophs.
D) heterotrophs.
Correct Answer:
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Q41: Microbes are important on Earth because
A)they regulate
Q42: During respiration glucose combines with _ to
Q43: Molecules of _ are thought to have
Q44: What type of microbes would you expect
Q45: Humans are
A)photoautotrophs.
B)photoheterotrophs.
C)chemoauthotrophs.
D)chemoheterotrophs.
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
Q50: During metabolism water combines with _ to
Q51: Scientists believe that early Earth's atmosphere was
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