Global human population stood at 4 billion in 1974, but by 2017, it was 7 billion. There is no question that this rapid increase in population strains the planet's resources. However, having a relatively small population does not mean that a nation is not impacting the environment. How do more-developed, smaller population nations increase their environmental impact?
A. higher consumption of oil and coal
B. higher per capita income
C. lower production of CO2 emissions
D. all of the above
choose one of the answers