With a 2019 total population of over 494 million people , North America comprises 6.4% of the global population. Relative to other countries, North American countries have low population densities per square kilometre  . Population projections indicate a steady growth in the three countries, which will exert pressure on consumption and increase risks under climate change . North America is also responsible for about a quarter of global greenhouse gas  emissions. Since 1990, North American GHG emissions have increased by almost 18% , and in 2019 the region was responsible for 5.9 MtCO2 emissions worldwide . In terms of annual CO2 emissions per capita, in 2019 Canada had 15 metric tons of CO2 per person , the USA had 16 tCO2 per person and Mexico had 3.4 tCO2 per person .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report