1. Define the term niche.

2. Name three resources for which organisms might compete.

3. Define evolution. How might evolution be affected by competition.

4. In what ways do bacterial populations act like organisms? What properties do bacterial populations have that are unique to them?

5. What happens if the following microbes were put into a test tube at 28 degrees at a pH of 7.5? Would there be competition? which microbe or microbes would survive? Pseudomonas retii, scribio euglensis, escherichia coli, leuconostoc botolus.

6. What is the significance of the optimal temperature and pH for each microbe (Pseudomonas retii, scribio euglensis, escherichia coli, leuconostoc botolus.)