Final answer:
Global temperatures are expected to increase by 2°F to 11.5°F by 2100, with current models showing a 1°C rise already occurred, projecting potentially 1.7°C due to past emissions. Future temperature increases depend on CO₂ emission levels.
Step-by-step explanation:
It is indeed expected that there will be an increase in global temperature averaging between 2°F and 11.5°F by 2100, as predicted by various climate models and based on the levels of greenhouse gas emissions. These models account for the rise in temperature due to increasing concentrations of carbon dioxide in the atmosphere, indicating that we are likely to see a continued temperature increase. Current data suggests that the global temperature has already increased by approximately 1°C, which aligns with model predictions of an eventual rise of around 1.7°C due to past CO₂ emissions, even without further contributions .However, the projections vary widely due to uncertainties within the system and the different scenarios of CO₂ emissions. It is clear that as CO₂ levels continue to rise, the increase in temperature is set to continue, which may happen at a faster rate than previously experienced.