A global ecosystem refers to the interconnected system of living organisms, including plants, animals, and microorganisms, along with their physical environment across the Earth. This system encompasses various habitats, such as forests, oceans, and deserts, where different species interact with each other and their surroundings. The balance of these interactions is crucial for maintaining biodiversity and supporting life. Human activities, such as deforestation, pollution, and climate change, can significantly impact global ecosystems. These changes can lead to habitat loss, species extinction, and disruptions in ecological processes. Protecting and restoring ecosystems is essential for sustaining the planet's health and ensuring the survival of diverse species, including humans.