Discussion 250-500 words. Discuss whether microbes are good or bad, and what life would be like without microorganisms.Give specific examples (species) of “good” and “bad” microbes.Cite your sources. by admin Discussion 250-500 words. Discuss whether microbes are good or bad, and what life would be like without microorganisms. Give specific examples (species) of “good” and “bad” microbes. Cite your sources.