The Amazon rainforest, the world’s largest tropical rainforest, plays a crucial role in regulating the global climate. Absorbing about 220 million tons of CO2 annually, it acts as a carbon sink, a natural system that absorbs more CO2 from the atmosphere than it releases. This function is essential for mitigating climate change. The Amazon rainforest, the world’s largest tropical rainforest, plays a crucial role in regulating the global climate. Absorbing about 220 million tons of CO2 annually, it acts as a carbon sink, a natural system that absorbs more CO2 from the atmosphere than it releases. This function is essential for mitigating climate change. Environment Phys.org – latest science and technology news stories