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Johnnyvic Johnnyvic
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6 years ago
How small is the smallest object that can be seen with a light microscope?
 
  a. 2 m
  b. 0.2 m
  c. 2 nm
  d. 0.2 nm

Question 2

Many biologists feel that the first self-replicating organic systems were
 
  a. types of RNA.
  b. forms of DNA.
  c. based on proteins.
  d. formed in space.
  e. plants.
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yushiyushi
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6 years ago
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Johnnyvic Author
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6 years ago
Upwards Arrow Correct again
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