The major geographical feature of the Amazon Basin is its dense rainforest ecosystem and vast river system. This region, predominantly located in Brazil, is one of the most biodiverse places on Earth, home to millions of species of plants and animals, many of which are endemic. The Amazon River, the largest river by discharge volume, winds through this basin, playing a crucial role in the sustenance of the ecosystem. The Amazon Basin significantly impacts global weather patterns and serves as a vital carbon sink. Conservation efforts are essential due to threats posed by deforestation, climate change, and agriculture.