What are anaerobic and aerobic bacteria?

Explanation

**Step-by-Step Solution:**

1. **Definition of Aerobic Bacteria:**
- Aerobic bacteria are microorganisms that require oxygen for their survival and growth. They utilize oxygen to carry out cellular respiration, which is a process that helps them convert nutrients into energy.

2. **Definition of Anaerobic Bacteria:**
- Anaerobic bacteria are microorganisms that do not require oxygen for their survival. In fact, they may even find oxygen to be harmful or toxic. These bacteria obtain energy through anaerobic respiration or fermentation processes that do not involve oxygen.

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