Q: Bob and Andy are two microbiologists. They are studying bacteria: Bob studies nitrogen fixating bacteria, while Andy studies non-respiratory and facultative anaerobes. Which researcher learned less about the enzyme nitrogenase?
A: Andy

Q: Pam and Ellie are two entomologists. they are both studying ants at the moment: Ellie is studying leafcutter ants, while Pam is studying ants that farm aphids. Which scientist read less about dairying ants milking the aphids?
A: Ellie

Q: Toronto is home to one of the leading manufacturers of aerosol sprays in the country. Because of this, homes in Toronto often spray high levels of aerosol on a regular basis. In Saskatchewan, meanwhile, the local government enacted a ban on aerosol sprays several years ago, so their level of aerosol use is now essentially zero. Which city, Toronto or Saskatchewan, will be releasing less chlorine gases?
A: Saskatchewan

Q: Mike lives in a cold mid-western city, where there is not much predator prey interaction. Mike noticed that in his city some squirrels have darker coat, while others have lighter coat. He also knew that darker coats are more suitable in cold environment with less predator prey interaction. He started thinking why the squirrels developed different coat colors. Would darker squirrels have greater or smaller chance of survival than lighter squirrels?
A:
greater