Please provide the passage to be able to receive an answer
It states a universal truth about life.
False! A limerick typically has five lines!
The answers are construction and mining. Mining and construction both involve things where there's a lot of dust and this can cause respiratory issues because prolonged exposure clogs and ruins your lungs and can cause cancer. Mining and usage of fossil fuels like coal also destroys the air with carbon monoxide which also ruins the atmosphere and harms respiratory organs.