Some animals excrete nitrogen containing wastes as urea in urine. others excrete uric acid in the form of a thick paste. in which type of environment does the excretion of uric acid provide the greatest advantage

oxygen +1 most likely

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.