The biosphere is the global sum of all ecosystems, where life exists on Earth. It includes all living organisms, such as plants, animals, and microorganisms, along with their interactions with the environment. The biosphere is essential for maintaining life, as it provides the necessary resources like air, water, and nutrients. This complex system is found in various habitats, from the deepest oceans to the highest mountains. The biosphere is influenced by factors like climate and geography, which shape the different ecosystems, such as forests, deserts, and coral reefs. Understanding the biosphere helps us appreciate the delicate balance of life on our planet.