Question

People living in cities and industrial areas have darker lungs why? give your reasons.

please can someone answer this question fastt ​

Answer 1

Due to the high pollution the lungs cannot filter everything out causing it to basically soak in the lungs and stay there.

Answer 2

Answer: Pollution/air quality

Explanation: Industrial areas and cities have higher pollution and worse air quality, which can lead to respiratory issues. Darker lungs can be caused by smog and smoke inhalation, particulates, etc.