Question 38 (bonus): True or False. Over the last 800,000 years, CO 2 levels have not been as high as they are today. In fact, humans have increased atmospheric CO 2 concentrations by 47% since the Industrial Revolution began. True False
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Question 38 (bonus)- True or False- Over the last 800-000 years- CO2 l.docx
1. Question 38 (bonus): True or False. Over the last 800,000 years, CO 2 levels have not been as
high as they are today. In fact, humans have increased atmospheric CO 2 concentrations by 47%
since the Industrial Revolution began. True False