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Home Q & A Board Biology-Related Homework Help General Biology
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rolab97 rolab97
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6 years ago
The heart of amphibians has ____ chambers. The hearts of birds and mammals have ____ chambers.
  a. two; three
  b. three; four
  c. two; four
  d. three; five
  e. three; two

Question 2

Sharks detect motion in the water or waves by their:a.
   lateral lines.
  b. electroreceptors.
  c. keen olfaction.
  d. sight.
  e. dorsal fin
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mapmap
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6 years ago
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rolab97 Author
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#2
6 years ago
The fact that I can't marry you for this saddens me.
map
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#3
6 years ago
Let's keep this professional  Monkey
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