lung cancer is caused by
a. coal minning
b. chromium flouride
c.bauxite minning
d. cement factory
Asked by kaintkaku
1st May 2018,
7:50 AM
Answered by Expert
Answer:
(a)Coal is typically extracted from underground mines, without ventilation, and transported to the surface using carts powered by manpower or electricity. Due to improper ventilation, the coalmine dust eneters the respiratory system therby affecting the lungs
Answered by Expert
1st May 2018,
12:00 PM
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