An ecosystem is an area where living and nonliving things interact.
Community - Different populations of species that live in the same place at the same time.
Population - all the organisms of the same species that live in the same place.
A producer is a living thing that makes its own food from sunlight, air, and soil. Green plants are producers who make food in their leaves.
A consumer is a living thing that cannot make its own food. Consumers get their energy by eating food. All animals are consumers.
A decomposer is a living thing that gets energy by breaking down dead plants and animals. Fungi and bacteria are the most common decomposers.