Problem: Given the question: Two smoker friends found out more about cancer. Bill got scared and started making healthy lifestyle choices, while Dan carried on with his life as if nothing happened. Which friend decided to avoid UV lamps?
++++++++++++++++++++++++++++++++
The answer is:
Bill

Problem: Given the question: A group of researches studied the green house gas emissions and their effects on Earth and people during the eighties compared to the twenties. The eighties produced way more green house gasses than the twenties did. During which decade did Earth experience a decreased average global temperature?
++++++++++++++++++++++++++++++++
The answer is:
twenties

Problem: Given the question: David was working in his chemistry lab. He selected two isotopes, sample A and sample B. Sample A had longer half-life, but sample B had shorter half-life. After some time he checked sample A when its one half-life had passed. He noted it as sample A1. Then he came back to see it again when two half-lives had passed. He noted it as sample A2. Which sample would have less isotopes, sample A1 or sample A2?
++++++++++++++++++++++++++++++++
The answer is:
sample A2