Problem: Ronaldo and Jeff are two college roommates that have similar body structure and similar physical activity levels. Ronaldo is a nutrition enthusiast and eats a diet with appropriately low amounts of fat and cholesterol. Jeff, on the other hand, doesn't really care about nutrition at all. He eats whatever he wants, whenever he wants, and as a result he consumes a diet with an inappropriately high amount of fat and cholesterol. Who is more likely to have increased blood lipid levels?

A: Jeff

Problem: Two groups of scientists examined two fires. Group A put a large log on it, and group B made a fire with small twigs. They wanted to see which fire would last longer. Which group had a fire that lasted longer?

A: Group A

Problem: When Emily was 4 years old she came down with a case of the chicken pox. She is now 14 and her younger brother Victor has now caught the chicken pox from another child at school. Emily opts to stay home and take care of him. Will building an immunity to a pathogen increase or decrease the chances of infection by that pathogen.

A: decrease

Problem: Brad had a friend that lived on Oahu, part of The Hawaiian Islands. The friend's name was Hank and he invited Brad over to visit the islands. Brad had never been there before, and he lived in London, UK. Which friend lived closer to Kauai island?

A:
Hank