Mention four aspects in which uricotelism differs from ureotelism

The four aspects in which ureotelism differs from ureotelism are:
(a) Uricotelism is excretion of uric acid whereas ureotelism is excretion of urea.
(b) Uric acid is non-toxic whereas urea is less toxic.
© Uric acid is insoluble in water whereas urea is soluble in water.
(d) Uric acid can be excreted out in the form of crystals
but urea does not form crystals.