Breathing polluted air causes diseases of the

Options

A. nervous system
B. circulatory system
C. respiratory system
D. digestive system

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the diseases caused by breathing polluted air. We need to identify which body system is primarily affected by this action.

2. **Identifying the Relevant Body System**: Breathing is a process that involves the respiratory system. Therefore, we should focus on how polluted air affects this system.

3. **Effects of Polluted Air**: Polluted air can lead to various health issues. Common problems include lung disorders, which can manifest as asthma, bronchitis, or other respiratory diseases.

4. **Considering Other Body Systems**: While the respiratory system is primarily affected, we should also consider if there are impacts on other systems, such as the circulatory system. Polluted air can lead to cardiovascular issues as well.

5. **Narrowing Down the Answer**: The question specifically asks for diseases caused by breathing polluted air. Since the respiratory system is directly involved in the act of breathing, it is the most relevant system to focus on.

6. **Conclusion**: The diseases caused by breathing polluted air primarily affect the respiratory system, but they can also impact the circulatory system due to the interconnectedness of these systems.

**Final Answer**: Breathing polluted air causes diseases of the respiratory system.

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