Rob was evaluating two research studies on climate change, study A and study B. Study A explained how increased greenhouse gases would affect the climate. On the other hand, study B showed how decreased greenhouse gases would affect the climate. Rob found the studies very interesting. In which study more heat would be trapped inside the Earth's atmosphere, study A or study B?
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Answer: study A

Danny started weight lifting two years ago, he wanted to be bigger. His brother Arnie preferred athletic competitions such as running, so he became a runner. Which brother increased the efficiency of his cardiac muscle?
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Answer: Arnie

Two islands were situated in different oceans. Hill island used fossil fuels and released a lot of carbon dioxide into the atmosphere, while Coral island was very protective towards the air and the ocean. Which island contributed more to an increase in carbon dioxide levels?
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Answer:
Hill