Problem: The U.S. produces its energy using fossil fuels, while Germany uses nuclear power plants as their main energy source. The two countries impact the environment in different ways. Given the paragraph above, please answer correctly the following question: Which country causes more acid rain?

A: The U.S.

Problem: Different wavelength electromagnetic radiations have different uses. John is a physicist. He needed to find appropriate wavelength electromagnetic radiations for his experiments. To that end, he selected three electromagnetic radiations, microwaves, infrared light, and visible light. He noted microwaves as case A, infrared as case B, and visible light as case C. Given the paragraph above, please answer correctly the following question: Which wavelengths would be longer, case A or case B?

A: case A

Problem: Robin and Samantha are both bodybuilders preparing for a competition. Both of them are trying to change their skin complexion to help their appearances at the competition. Robin begins exposing her skin to high amounts of UV light several days a week. Samantha decides not to use any UV light and instead just uses lotion to help her skin. Given the paragraph above, please answer correctly the following question: Who will produce lower amounts of melanin?

A: Samantha

Problem: Joel has just started his first day working as a scientist in a laboratory. The first task he was given is to look at two atoms and to jot down as much information about the two as he can. First, he needs to come up with an identification for these atoms. Since he is new, he decides to keep it professional and simply call the larger of the two atoms "atom L" and the smaller one "atom S". Now that he's taken care of that he can get down to work. Given the paragraph above, please answer correctly the following question: The ionization energy is lower in which cell?

A:
atom L