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Home Q & A Board Biology-Related Homework Help General Biology
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bgarlipp bgarlipp
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6 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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6 years ago
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bgarlipp Author
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6 years ago
Thanks
DAGINC
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Yesterday
You make an excellent tutor!
jbarnett14
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2 hours ago
This site is awesome
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