2014, 2015, and 2016 were the warmest years ever recorded. What's causing global temperature to go up?
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{"name":"2014, 2015, and 2016 were the warmest years ever recorded. What's causing global temperature to go up?", "url":"https://www.quiz-maker.com/QPREVIEW","txt":"2014, 2015, and 2016 were the warmest years humans have ever directly measured globally. What does science identify as the underlying cause for recent global temperature increases?","img":"https://cdn.poll-maker.com/14-618354/201601-201612.gif?sz=1200"}