What is the leading cause of 90% of lung cancer causes?

A ) Cold drinks

B ) Water pollution

C ) Smoking ✅

D ) None of these

Related Questions
  1. Which gas regulates the breathing rate in humans?
  2. Length of the trachea (windpipe ) in an adult person is----:
  3. Oxygen moves from the alveoli into the blood by----:
  4. What are alveoli?
  5. How many times does a normal man respire per minute----:
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