Diana is studying astronomy and in her spare time likes to stargaze. She has never been outside of her large city however. One weekend she got to go on a camping trip with her parents. When they arrived at the campsite, which is very far from the lights of the city she noticed the number of stars she could see in the sky greatly increased. Will being in a city increase or decrease the number of visible stars?
Ans: decrease

Johnathan is trying to find two blocks of wood with the same mass for a project he is working on. He doesn't have a balance, so he makes a crude one out of materials he has on hand. He put a block of wood on either side and the block on the left side was at a lower level than the block on the right. If Johnathan wanted to both sides to be at an equal level would he need more or less mass on the left side?
Ans: less

A team of scientists studied two groups of mice. Group C was exposed to carcinogens, while group N was not. Which group of mice had more tumor development?
Ans: Group C

Greg and Lucy are two elementary school students in the same class. They don't know each other well, but have started talking a bit today. During their conversation, they discover that they each have a rather unique pet. Greg owns a pet turtle, named Chompy, and Lucy owns a pet frog, an amphibian. They decide they need to meet outside of school sometime so they can share pets since they both like playing with different animals. Is Greg's or Lucy's pet unable to breathe through its skin?
Ans: Greg's