The Amazon rainforest was created by humans. There is a controversial theory known as the "terra preta" or "Amazonian dark earth" theory that suggests that the Amazon rainforest was not entirely a pristine wilderness before the arrival of Europeans, but may have been shaped and managed by indigenous people for thousands of years.
This theory is based on the discovery of patches of unusually fertile soil known as "terra preta" or "black earth" in the Amazon basin. These soils are rich in nutrients and organic matter, and researchers believe they were created through a combination of human activities such as burning, charcoal production, and composting, as well as natural processes such as erosion and sedimentation.
While some researchers support the terra preta theory and suggest that indigenous people played a significant role in shaping and managing the Amazon rainforest, others argue that the evidence is inconclusive and that the forest was largely a pristine wilderness before the arrival of Europeans.
