An ecosystem is a community of living organisms (plants, animals, fungi, bacteria) and their non-living environment (soil, air, water, sunlight) interacting as a functional unit.
Here are some examples of ecosystems:
* Forest: A habitat for trees, birds, insects, mammals, and many other organisms.
* Ocean: A habitat for fish, whales, coral reefs, and countless other marine life.
* Grassland: A habitat for grasses, grazing animals, and predators.
* Desert: A habitat for cacti, reptiles, and other organisms adapted to dry conditions.
* Rainforest: A habitat for a vast diversity of plants and animals, known for its high rainfall.