I want to know the answer to the following question:
Who did Justus von Liebig argue with over the belief that animals get protein from plants?
All the background I'm provided with is that "With a reputation as the leading organic chemist of his day but with no credentials in animal physiology, Liebig grew rich making food extracts like beef bouillon and infant formula that were later found to be of questionable nutritious value.". Is that enough to answer the question?
Answer: no