According to computer models,what could be the result of adding carbon dioxide to the atmosphere? 

A)  a reduction in the natural greenhouse effect 
B)  a rise in the sea level 
C)  an increase in food production 
D)  a stabilization of climate patterns

Computer models suggest that the addition of carbon dioxide to the atmosphere could result in a rise in sea level due to the melting of polar ice caps and thermal expansion of the seas. Option A is incorrect as the addition of carbon dioxide would enhance the greenhouse effect. Option C is incorrect as the effect of carbon dioxide on food production is complex and involves various factors such as soil quality, temperature, and precipitation. Option D is incorrect as the addition of carbon dioxide could lead to changes in climate patterns such as more frequent extreme weather events.