Please answer this: John was studying the plate tectonics of earth. He specifically selected two locations, location A and location B. He noticed that location A had lot of plate tectonics activities, but location B didn't have much of that. He wondered how that would make difference in those locations' characteristics. Which location would have more volcanoes and earthquakes, location A or location B?
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Answer: location A

Please answer this: A group of researches studied the green house gas emissions and their effects on Earth and people during the eighties compared to the twenties. During which decade did Earth experience a decreased concentration of carbon dioxide?
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Answer: twenties

Please answer this: Vic and Joe studied chemistry in school. Joe studied alkanes, while his friend Vic studied other acyclic hydrocarbons. Which friend studied less about saturated hydrocarbons?
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Answer:
Joe