The organisms that depend on anaerobic respiration for the energy are called _______ or ______ organisms.

Explanation

**Step-by-Step Solution:**

1. **Understanding Anaerobic Respiration:**
- Anaerobic respiration is a type of respiration that occurs in the absence of oxygen. It is a process through which certain organisms can generate energy.

2. **Identifying Organisms:**
- Organisms that rely on anaerobic respiration for energy do not require oxygen for their metabolic processes.

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