The study of living organisms in their environment.
A community of living organisms sharing an environment.
Non-living conditions which can influence where plants and animals live.
These are the living parts of the human system–the animals, plants and microorganisms.
All the interactions of a species with the other members of its community including: competition, predation, parasitism and mutualism.
A group of organisms of one species that interbreed and live in the same place at the same time.
All the populations if different student.
The largest group of organisms, capable of interbreeding and producing fertile offspring.