Smoke Is

Q11: A form of coal which produces less

Q12: Products of burning coal in air can

Q13: Products of burning coal in air can

Q14: Secondary air pollutants are<br>A)rapidly formed<br>B)formed from primary

Q15: Coal (carbon) tends to burn to produce

Q17: Probably the most critical of all substances

Q18: Fly ash is<br>A)materials from burning coal that

Q19: Industrial smog is related to<br>A)burning coal in

Q20: Acidic air pollution damages<br>A)limestone and marble structures<br>B)iron

Q21: How does acidification of lakes result in