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Ammoniotelic excretion

Why there is abandonment of ammoniotelic excretion takes place after the passage of animals from aquatic to terrestrial habitat?

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Ammonia is quite highly toxic molecule if not diluted and it gets quickly excreted out of the body. Due to this reason, ammoniotelic excretion was abandoned within the terrestrial habitats as availability of the water for dilution is decreased in this medium and wastes could not be released so promptly to exterior.

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