How is photochemical smog formed? emissions from factories are released into the air and react with other subs.
emissions from cars are released into the air and react with other subs.
when nitrous oxides react with water vapor
when carbon monoxide reacts with sulfur dioxide in the air

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.