Process of exchange of `O_(2)` from the atmosphere with `CO_(2)` produced by the cells is called

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the process that involves the exchange of oxygen (O₂) from the atmosphere with carbon dioxide (CO₂) produced by cells.

2. **Identifying the Process**: The process being described is related to respiration. Respiration is a biological process that involves the intake of oxygen and the release of carbon dioxide.

3. **Defining Respiration**: Respiration can be defined as the process through which organisms exchange gases with their environment. In this process, oxygen is taken in from the atmosphere and carbon dioxide is expelled as a waste product.

4. **Mechanism of Gas Exchange**: During respiration, oxygen from the atmosphere enters the cells, where it is used for metabolic processes. Concurrently, carbon dioxide, which is produced as a byproduct of these metabolic processes, is transported out of the cells and released into the atmosphere.

5. **Conclusion**: Therefore, the process of exchange of O₂ from the atmosphere with CO₂ produced by the cells is called **Respiration** or **Breathing**.

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