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JAZCorruthatd
JAZCorruthatd JAZCorruthatd
  • 05-04-2016
  • Biology
Answered

Birds evolved ____________ to help them fly.

Ainternal fertilization
C4-chambered heart
Blungs
Dnone of the above

Verified Answer :

Gaea99
Gaea99 Gaea99
  • 15-04-2016

none of the above I guess cause no one of that part help them fly.

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