Name: __________________________

1. 0.5
   2.3
   5.3
   10.7


2. 0.5
   2.3
   5.3
   10.7


3. natural
   anthropogenic


4. positive
   negative
   
   
5. 0.5
   2.3
   4.7
   10.9


6. increases
   decreases


7. colder
   constant
   warmer


8. increases
   decreases


9. stratospheric water vapor
   surface albedo
   solar irradiance


10. they cannot cause global-scale temperature changes
    the global temperature changes they can cause are typically observable only for a year or two


11. albedo changes due to land use
    total aerosol effects
    carbon dioxide


12. 0.6
    1.0
    1.6
    2.3


13. warmer than
    the same as
    cooler than

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