A terrestrial ecosystem refers to any ecosystem that is found on land, including forests, grasslands, deserts, tundra, and other land-based biomes. Other synonyms for a terrestrial ecosystem include a land-based ecosystem, a terrestrial biome, or a land-based habitat. In these environments, plants and animals have adapted to survive in different climates and conditions that are found on the earth's surface. A terrestrial ecosystem is essential in providing humans with important resources such as fresh air, clean water, and resources for food and medicine. Humans must take steps to preserve terrestrial ecosystems to ensure that they continue to support life on earth.