molleBryanFos
molleBryanFos molleBryanFos
  • 22-04-2016
  • Biology
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gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because _____.

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EmilyMendez
EmilyMendez EmilyMendez
  • 22-04-2016
water contains much less oxygen per unit volume than air
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