Problem: Keith was playing a simulation game. In the game he could travel around the Sun in the future. He started the game in present time, which was denoted as time A. Then he traveled 5.4 billion years into the future, which was denoted as time B. Finally, he reached 7.5 billion years into the future, which was denoted as time C. He was amazed to find how the Sun would change over time. Would the Sun's core be hotter or cooler in time B than in time A?

A: hotter

Problem: Two villages experienced flooding this spring. Berg village used many sandbags to protect from the dam overflowing. Creek village didn't use any sandbags, they were caught by surprise and experienced horrible damages. Which village didn't experience catastrophic flooding?

A: Berg

Problem: Scientists are performing some tests on two molecules in order to try to discover how to bring dinosaurs back to life. In the first test, they increased molecule Y's speed, but they didn't do anything to molecule X's speed. They then compared the two molecules to see if they could discern anything useful. Which molecule has more kinetic energy?

A: molecule Y

Problem: Two friends met after 20 years and compared diets. Paul ate junk food daily and weighed 300 lbs and was 5'8'' in height. Mike was vegan and stayed healthy and thin. Which friend was more likely to be obese?

A:
Paul