Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: Figure 41.13 Nitrogenous waste is excreted in different forms by different species. These include (a) ammonia, (b) urea, and (c) uric acid. (credit a: modification of work by Eric Engbretson, USFWS; credit b: modification of work by B. "Moose" Peterson, USFWS; credit c: modification of work by Dave Menke, USFWS). Answer: nitrogenous waste
Solution:
Urea, ammonia and uric acid are types of what waste, excreted in different forms by different species?