Communities and populations

There are a number of key terms within communities and populations:

an is the interaction between a of living organisms and their environment
the consists of all the conditions that surround any living organism - both the other living things and the non-living things or physical surroundings
a is all the organisms of the same or closely-related in an area
an ecosystem is two or more populations of organisms (usually many more) in their environment
a is the place where an organism lives
a is two or more populations of organisms

Organisms within an ecosystem are organised into levels.

Producer	Producers are plants and algae, which photosynthesise.
Primary consumer	Primary consumers are herbivores, which eat producers.
Secondary consumer	Secondary consumers are carnivores, which eat primary consumers.
Tertiary consumer	Tertiary consumers are also carnivores. They eat secondary consumers.

Producer
Producers are plants and algae, which photosynthesise.

Primary consumer
Primary consumers are herbivores, which eat producers.

Secondary consumer
Secondary consumers are carnivores, which eat primary consumers.

Tertiary consumer
Tertiary consumers are also carnivores. They eat secondary consumers.

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