Please answer this: James is memorizing the periodic table and some of the features of the elements on it. He is currently working on the fourth row which starts with Potassium (K) on the far left and ends with Krypton (Kr) to the far right. Which of the two elements, Potassium (K) or Krypton (Kr) is a metal?
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Answer: Potassium (K)

Please answer this: Two regions, region A and region B, shared a common border, a river. Region A was favorable for sulfate-reducing bacteria and nitrogen fixing bacteria, while region B was more favorable for the developement of Non-respiratory anaerobes and facultative anaerobes. Which region had more sulfate reduction?
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Answer: region A

Please answer this: David is interested in how electricity works. One day he had two electric charges to investigate, charge A and charge B - both of the charges were negative. He also had two electric fields, field C and field D. He noticed that electric charges were moving from field C to field D. Which field would have higer potential energy, field C or field D?
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Answer:
field C