Applied Bio 27.4

allowing it to diffuse out of their bodies

converting it into uric acid

converting it into urea

exreting it as urine

excrete excess water through their kidneys

lose water through osmosis

conserve water by producing concentrated urine

pump excess salt out across their gills

kidneys

gills

nephridia or Malpighian tubules

nephrostomes

they have specialized kidneys that can store the salt safely

they excrete urine that is 25% more concentrated than their blood

they have specialized glands in their heads that excrete solutions

they pump out the excess salt across specialized gills

the kidneys use active transport to remove water from the blood

kidneys use passive diffusion to remove water from the blood

kidneys use passive osmosis to remove water from the blood

kidneys use their nephridia to filter water out of the blood