Selvas are dense tropical rainforests found primarily in regions like the Amazon Basin in South America. These ecosystems are characterized by high biodiversity, with thousands of plant and animal species coexisting in a humid, warm environment. The thick canopy formed by tall trees provides shelter and sustenance for various wildlife, including birds, mammals, and insects. The term "selva" is often used to describe the lush, green landscapes that play a crucial role in regulating the Earth's climate. They absorb carbon dioxide and produce oxygen, making them vital for maintaining ecological balance. Additionally, selvas are home to many indigenous communities who rely on their resources for survival.