Definitions?

[Joebot]

Does anyone know the standard Alevel definiion of the below ... I've lostmy notesand and cant find it anywhere?

Ecosystem

Community

Niche

Population

Enviroment

Habitat

I know what they are essentialy .. i just need the more precis definitions.

[Winter]

The definitions for all of these terms can be found on this website's dictionary:

- http://www.biology-online.org/dictionary.asp

[Joebot]

Thanks.