Name______________________________________________________________ Date____________ STUDENT SHEET 16.1 CAUSES OF GLOBAL WARMING 1. Which human activity produces the most carbon dioxide? __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ 2. Without human activities, would there be carbon dioxide in the atmosphere? __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ 3. Without human activities, would carbon dioxide concentrations have increased, decreased, or stayed the same between 1900 and 2000? __________________________________________________________________________________ __________________________________________________________________________________ ©2017 The Regents of the University of California __________________________________________________________________________________ __________________________________________________________________________________ 4. If human activity doesn’t change, is the amount of carbon dioxide in the atmosphere likely to continue to rise, stay the same, or go down? __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________
