Galapogos tortoises have a number of shell variations, shown right. What are the advantages of choosing a system examining the beaks of finches instead of the shells of tortoises? Check all that apply.

Finches generally have shorter lifespans than tortoises, so generations pass more quickly and changes can be observed sooner. Their populations are also likely to be larger, providing more individuals and data to study, and birds are easier to track and monitor. Tortoises moving slowly does not prevent natural selection from influencing which shell traits become more common, so C is not an advantage of studying finches.

AI-written and checked against the verified answer.