Ecosystem:An ecosystem is a community of different species of living organisms and their physical environment. Ecosystems can be found in all sorts of places, from small ponds to large oceans. They can also be found in different types of habitats, such as forests, deserts, and grasslands. All ecosystems have abiotic (non-living) components, such as sunlight, air, water, and soil. These components provide resources that are necessary for life. Biotic (living) components include plants, animals, fungi, and bacteria. These organisms interact with each other and with their physical environment to produce the conditions necessary for life.