AP BIOLOGY

Detailed explanation-1: -China was the biggest emitter of carbon dioxide (CO₂) emissions in 2021, accounting for nearly 31 percent of the global emissions.

Detailed explanation-2: -The scheme will allow carbon emitters to reduce emissions or purchase emission allowances from other emitters. Through this scheme, China will limit emissions while allowing economic freedom for emitters. China is the largest emitter of greenhouse gases (GHG) and many major Chinese cities have severe air pollution.

Detailed explanation-3: -China released 11.47 billion metric tons of carbon dioxide emissions in 2021, making it by far the world’s largest polluter that year. While most countries experienced dramatic emission reductions in 2020 due to COVID-19, China was one of only a handful of countries where emissions increased.

Detailed explanation-4: -China accounted for 27 percent of the global greenhouse gas emissions in 2021, making it the world’s largest emitter that year. China’s share of annual greenhouse gas emissions has doubled over the past two decades due to rapid industrialization.