Problem: Rob is learning about ionization. He looks at a specific group of elements from top to bottom to figure out thier ionization energy. Given the top element and the bottom element in the group Rob looks at, which has a lower ionization energy?

A: bottom element

Problem: Two high school buddies, Dan and Bob, had very different lifestyles 30 years later. Dan made only healthy lifestyle choices, was vegan. Bob ate meat, cheese and didn't care about his health and didn't protect himself. Which man smoked tobacco, Dan or Bob?

A: Bob

Problem: Ben and Andy researched significant greenhouse gasses in Earth's atmosphere. Andy researched more about carbon dioxide, while Ben researched methane gas. Which researcher studied less about ocean acidification?

A: Ben

Problem: Fox and Ken were two aspiring horticulturists. Ken studied more about plant pollination, while Fox studied about mycorrhizal fungi. Which friend read less about fungi growing around the root cells?

A:
Ken