To stop carbon dioxide concentrations from increasing, human emissions must be reduced by about __________ percent.

Question

Quizplus · Accepted Answer

According to scientific research, to limit global warming to 1.5°C, carbon dioxide concentrations must stabilize at 450 parts per million (ppm). Currently, concentrations have already exceeded 400 ppm. To prevent concentrations from further increasing, human emissions must be reduced by 80% by the year 2050, according to the Intergovernmental Panel on Climate Change (IPCC). Therefore, option D, reducing human emissions by 80%, is the correct answer.

To Stop Carbon Dioxide Concentrations from Increasing, Human Emissions Must