Keith is a doctor at the city hospital. Today, he is seeing six patients, patient A, patient B, patient C, patient D, patient E, and patient F. Patient A is a smoker, but patient B is not a smoker. Patient C uses sunscreen, but patient D does not use any sunscreen. Patient E tans with tanning lamps, but patient F tans in the sun. Which patient would have higher risk or lung cancer, patient A or patient B?
Ans: patient A

Two groups of people were part of a nutrition study that lasted 2 years. Group A had a normal diet, while group B consumed an extra 1000 calories a day for 2 years. Group B gained lots of weight. Which group had more people that consistently consumed more food energy then they need?
Ans: group B

Jerry and Gary each live in separate cities, but both run equally sized farms that grow the same produce. The cities they live in have very similar environments with the only difference being that the CO2 levels in Jerry's town are elevated, and in Gary's they are not. Jerry and Gary regularly talk on the phone and compare notes with each other since their farms are so similar. Which person's crops will have fewer stomata?
Ans: Jerry's

The specialists studied two groups of larvae. Group L displayed all kinds of mutations while group D didn't. Which group of larvae had more changes in their DNA sequence?
Ans: Group L