Problem: Given the question: United States has varied geographical characteristics. Take for example, the Mississippi Delta. The delta has vast wetland that gets inundated every year. On the contrary, farther west, the Mojave Desert in Nevada sees very little precipitation or floodwater. Both places are beautiful in their own right, and attract many tourists every year. In which place more metal ions would precipitate, Mississippi Delta or Mojave Desert?
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The answer is:
Mississippi Delta

Problem: Given the question: Thomas and Alexander are freshman students in an introductory chemistry laboratory course at their local college. In this week's experiment, both Thomas and Alexander will be starting their experiments with liquid water. They both follow different experimental protocols, and at the end of the experiment Thomas discovers ice in his reaction flask, while Alexander discovers steam in his reaction flask. Which person must have decreased the temperature of their reaction?
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The answer is:
Thomas

Problem: Given the question: Two friends were in college. Hank studied plate tectonics, while his buddy Alex studied Earth's atmosphere. They were both very fascinated by the subjects. Which student learned less about mantle convection?
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The answer is:
Alex