Smoke causes

Options

A. diseases of lungs
B. bronchitis
C. asthma
D. All of these

Answer

**Step-by-Step Text Solution:**

1. **Understanding Smog**: Smog is a type of air pollution that is a mixture of smoke and fog. It is primarily caused by the burning of fossil fuels, industrial emissions, and vehicle exhaust.

2. **Effects on Lung Health**: One of the primary health impacts of smog is on the respiratory system. It can lead to various lung diseases due to the harmful particles and chemicals present in the air.

3. **Lung Cancer**: Exposure to smog can increase the risk of developing lung cancer. The carcinogenic substances in smog can damage lung tissue and lead to uncontrolled cell growth.

4. **Bronchitis**: Smog can also cause bronchitis, which is the inflammation of the bronchial tubes. This condition can result in coughing, mucus production, and difficulty breathing.

5. **Asthma**: Individuals with asthma may experience exacerbated symptoms due to smog. The pollutants can trigger asthma attacks by irritating the airways and causing inflammation.

6. **Conclusion**: In summary, smog is associated with several serious health conditions, particularly those affecting the lungs, including lung cancer, bronchitis, and asthma. Therefore, it is accurate to state that smoke (and the resultant smog) causes various diseases.

**Final Answer**: Smoke causes lung cancer, bronchitis, asthma, and other respiratory diseases.

---