The Amazon Rainforest, which is nourished by the Amazon River, is famously referred to as the "Lungs of the World" (or "Lungs of the Planet") because of its immense capacity to produce oxygen and absorb carbon dioxide. Through the process of photosynthesis, the millions of trees and plants within this massive tropical ecosystem are estimated to produce roughly 20% of the Earth's total atmospheric oxygen. Just as human lungs breathe in air to fuel the body, the Amazon "breathes" by drawing in vast quantities of greenhouse gases, particularly carbon dioxide, which helps to mitigate the effects of global warming. Beyond just oxygen production, this high-fidelity biological engine plays a critical role in regulating the global climate and water cycles. However, scientists often clarify that while it is a major oxygen producer, it also consumes a significant portion of that oxygen through plant respiration and decay; its primary global value lies in being one of the world's largest terrestrial "carbon sinks," storing billions of tonnes of carbon that would otherwise accelerate climate change if released.