What is an Ecosystem?

Discover how climate, water, soil, plants and animals function as one and depend on each other in distinct ecosystems, which can range from a pond to an ocean, a tree to a vast forest. Biology - Ecosystems - Learning Points. An ecosystem is a living community of organisms interacting with their physical environment. Large-scale ecosystems are categorized as biomes, of which there are at least seven. Biomes worldwide include rainforest, tundra, desert and ocean. Ecosystems rely on abiotic and biotic factors, the nonliving and living components, which are organised into niches. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.