1. Which contains more things, a microbiota or a microbime? 2. What is the dominant form of life on planet Earth and why is it dominant? 3. How have bacteria helped in our understanding of biology? 4. How are bacteria used by medical doctors to treat patients? 5. Why do current farming practices lead to an overuse of antibiotics? 6. How did ancient people use microbes? 7. What is the point of pasteurization? 8. Are all microbes dangerous? Why or why not? 9. How did Pasteur disprove spontaneous generation? 10. Why did Ignaz Semmelweis get in trouble with his fellow doctors? What happened to him? Challenge question Why is being "too clean" bad for human health?