Answer:
(b) Uric acid is the
least toxic ions. Insects, land tortoises, lizards and birds change most of
their nitrogenous waste into uric acid. It is the least toxic because it is
insoluble in water as there are in solid form, thus, contains the/least water.
In birds, uric acid mixes with undigested food to form the bird dropping.
Urea moves to blood
get filtered and eliminated with water in urine via kidneys.
Ammonia is
very toxic and needs water for diffusion.
Carbon dioxide
excretion takes place through the lungs-
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