A relationship between two species where both benefit from the interaction.
An organism that makes its own food (usually through photosynthesis)
All the living and non-living things in an area interacting with each other
The maximum number of individuals of a species that an environment can support.
A group of individuals of the same species living in the same area.
An organism that is hunted and eaten by another animal.
The specific role or "job" an organism has within its ecosystem
The variety of different species living in a particular habitat or ecosystem.
The parts of Earth where life exists, including land, water, and air.