Keywords (reading p. 879-884)

• Ammonia toxicity

• Urea

• Uric acid

• Osmoconformer

• Osmoregulator

• Passive transport

• Facilitated diffusion

• Active transport

  • Uniport
  • Antiport
  • symport

• Osmoregulation by an aquatic invertebrate

• Osmoregulation in marine fish

• Osmoregulation in freshwater fish

• Water loss on land

• Permeable and impermeable body surfaces

• Kangaroo rate water balance

• anhydrobiosis

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