5. Why after the passage of
animals from the aquatic to
the terrestrial habitat does the
abandonment of the
ammoniotelic excretion occur?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Ammonia is a toxic molecule if
diluted and quickly out of
the . For this reason
ammoniotelic excretion was
in terrestrial habitats the
availability of for dilution is
in this medium wastes
cannot be so promptly to
exterior.