At the time life first appeared on earth, the atmosphere contained large amounts of nitrogen, methane, ammonia, hydrogen, hydrogen sulfide, and:
a) neon.
b) oxygen.
c) carbon dioxide.
d) helium.
e) ozone.
Ans: c) carbon dioxide.
Biology & Microbiology
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Which of the following is NOT related to genetic drift?
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Indicate whether the statement is true or false
Biology & Microbiology