Answer:
1. They harm your lungs.
2. They can cause cancer.
3. You can overdose on drugs.
Explanation:
Answer:
Below.
Explanation:
Air pollutants.
Allergies.
Chronic sinusitis.
Lack of pertussis immunization.
Malnutrition (particularly in children)
Exposure to chemicals, fumes, and dust.
Smoke inhalation.
