Living or once living part of an ecosystem
Occurs when more than one individual or population tries to use the same limited resource
Non-living, never-living part of the ecosystem
Obtain energy by eating other organisms; also called heterotroph
Obtain energy from the sun through photosynthesis; also called autotroph
Living or once living part of an ecosystem: biotic factor
Occurs when more than one individual or population tries to use the same limited resource: competition
Non-living, never-living part of the ecosystem: abiotic factor
Obtain energy by eating other organisms; also called heterotroph: consumer
Obtain energy from the sun through photosynthesis; also called autotroph: producer