Scenario Three: Carbon dioxide emissions increase Set the carbon dioxide emissions rate to 9.8 gigatons.

Set the time step size to 10 years.

Select the step forward button once.

Increase the carbon dioxide emissions by 0.2 and press step forward.

Continue stepping forward once, increasing the carbon emissions each time, until you reach 2110.

Record the data in the table below.

Year

Carbon Emissions (gigatons)

Temperature (Fahrenheit)

1960

4.2

57.2

1970

5.8

57

1980

6.2

57.4

1990

7.8

57.6

2000

8

58

2010

9.8

58

Increase carbon dioxide emissions by 0.2 for each step forward for the rest of scenario three.

2020

2030

2040

2050

2060

2070

2080

2090

2100

2110