1. What would you predict would happen to the ratio of the peppered moth population as a result of cleaner burning fuels?
2. in western Africa there are birds called Blackbelly seed crackers. Some have small bills and feed on soph seeds while others have large bills which are able to crack the shells of hard seeds. would you protect natural selection for or against survival braids with an intermediate sized beak? what are the variables are environmental conditions that would affect their survival?