Review the following three scenarios and discuss the implications for global greenhouse ga...

Review the following three scenarios and discuss the implications for global greenhouse gas emissions. Which scenario will produce the most or least warming? Complete the graph provided here to predict how temperatures would change over the next century for each scenario. We are more interested in the trends than in the absolute values you identify for each scenario.

Scenario A: Global population peaks around 9 billion in 2050 and declines thereafter. New technologies are rapidly introduced, and economic disparities between regions are substantially reduced. Fossil fuels continue to supply most of the energy used by humans.

Scenario B: Global population continues to increase throughout the twenty-first century (11 billion by 2050). Disparities in the economic growth of regions persist, and technological change occurs slowly. The energy supply gradually changes from fossil fuels toward alternative energy sources.

Scenario C: Global population peaks at around 9 billion in 2050 and declines thereafter. Economies rapidly become service- and information-oriented, income disparities decrease, and energy technologies that do not rely on fossil fuels are introduced.