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bgarlipp bgarlipp
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7 years ago
The letter B in the above figure represents its
  a. shell.
  b. mantle.
  c. gills.
  d. siphon.
  e. none of these.

Question 2

Respiration by means of book lungs is characteristic
  of some
  a. flatworms.
  b. arthropods.
  c. annelids.
  d. mollusks.
  e. gastropods.
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walravensericwalravenseric
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7 years ago
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7 years ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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