The document discusses why the environment is important. It explains that the environment is where humans live and get resources for survival. All living things on Earth are connected through food chains, with the sun providing energy that plants use and animals consume plants or each other. Within the global biosphere, smaller ecosystems like rainforests and deserts interact; problems in one area affect the whole planet. However, environmental degradation through pollution and overuse of resources like water and fossil fuels endangers these systems. Protecting the environment is important because Earth is the only home humans have.