Problem: Mary was from a family that forbids all vaccinations. She never got any vaccines and developed immunity the hard way by getting many respiratory diseases. Ann got all here vaccines done in time and at the proper age. Which person didn't experience acute bronchitis?

A: Ann

Problem: Two students at the Agricultural Institute studied pedology. Bob studied soil weathering, while Dan studied types of soil. Which student studied more about rock that experiences chemical reactions?

A: Bob

Problem: Bobby and Kenny are two prolific farmers from Arkansas who have ponds located down stream from their farm sites. Bobby recently received a large order of potatoes from a neighboring city. Because of this order, Bobby has dramatically increased the amount of fertilizer he is using on his farm. Kenny mainly grows tomatoes, which are not in season right now, so his use of fertilizer is currently low. Over the past month there has been a large amount of rain falling on both Bobby and Kenny's farms. Who will ultimately cause more oxygen to be used up in the ponds near their farm?

A: Bobby

Problem: John is learning more about different cultures and people around the world. He noticed that people have different skin colors. To learn more about the science behind skin colors he categorized the skin colors into two broad groups, case D and case L. Case D is represented by darker skin and case L is represented by lighter skin. People in which case would have smaller risk of vitamin D deficiency, case D or case L?

A:
case L