57. birds and reptiles excrete their nitrogenous waste in the form of a.urea and uric acid respectively b.urea c.uric acid d.uric acid and urea
Nitrogenous wastes in the body tend to form toxic ammonia, which must be excreted. Mammals such as humans excrete urea, while birds, reptiles, and some terrestrial invertebrates produce uric acid as waste.
