Home » Biology » These groups of bacteria are harmless EXCEPTThese groups of bacteria are harmless EXCEPT These groups of bacteria are harmless EXCEPT A. denitrifying B. nitrifying C. nitrogen-fixing D. parasitic E. saprophytic Correct Answer: Option D Explanation Related Posts Partially digested food ready to leave the stomach is referred to as One of the following exist as colony Termites are called social insects because Which of the following vertebrates has the most simple structured heart Succession is best described as Which organelle is responsible for photosynthesis?