Are developed regions or developing regions responsible for the highest percentage of carbon dioxide output from fossil fuels?

Answer 1

The human race as a whole (this encompasses all industry, and all other human activity) is only responsible for 0.28% of CO2 emissions. 95% is water vapor; the ocean evaporates, we can't stop that. The other 4.72% is biological factors, farting, breathing, animals dying, etc.

To answer your question, developing nations such as India (being the highest) are surprisingly more responsible for this minuscule output. This is because first-world nations such as the United States employ practices such as clean coal, and nuclear energy (these being more efficient than garbage like wind power).

However, to reduce the amount of carbon dioxide, and pollutant particles in the air would be to kill us all. Plants require carbon dioxide for photo and chemosynthesis, and a byproduct of these cycles is oxygen. The pollutants on the other hand, reflect light and radiation from the sun. No pollutants means we burn to death, and less CO2 means we suffocate.