You and a friend walk through New York City's Time's Square on a Friday night. You comment on the crowds of people. Your friend replies "Each person contains about 10 times as many bacterial cells as human cells in their body."
Are humans or bacteria the dominant
life form here?
A. humans, because they form the
environment in which the bacteria live
B. humans, because they built New York City
C. bacteria, because certain strains can
sicken and kill humans
D. bacteria, because they far outnumber
humans
E. The answer depends on your definition of
"dominant."
E
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