How is oxygen and carbon dioxide transported in human beings?

Explanation

### Step-by-Step Solution:

1. **Understanding the Process of Respiration**:
- Respiration in humans involves the intake of oxygen (O2) and the expulsion of carbon dioxide (CO2). This process primarily occurs in the lungs.

2. **Transport of Oxygen**:
- Oxygen is transported in the body through red blood cells (RBCs).
- RBCs contain a respiratory pigment called hemoglobin.
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