Natural environments are areas where plants, animals, and other living organisms exist without significant human interference. These environments include forests, mountains, rivers, oceans, and deserts, each supporting unique ecosystems. The balance of these ecosystems is crucial for maintaining biodiversity and the health of the planet. In natural environments, various species interact with each other and their surroundings. For example, trees provide shelter and food for birds, while rivers offer habitats for fish. These interactions help sustain life and contribute to the overall functioning of the Earth's systems, making natural environments essential for ecological stability.