Species
A group of organisms capable of interbreeding to produce fertile offspring
Ecosystem
A self-contained, self-perpetuating system, made of all of the organisms and the environemnt in which they life and interact
Habitat
The place where an organism lives
Community
All of the living organisms of all species are found living in the same place, at the same time
Population
A group of the living organisms of one species are found living in the same place, at the same time
Biodiversity
The variability among living organisms from all sources, including terrestrial, marine and other aquatic ecosystems, and the ecological complexes of which they are a part
Habitat diversity
The number of different habitats in a given area
Species diversity
The number of different species in an area
Genetic diversity
The number of different alleles within a species
Species evenness
The relative abundance of individuals in each species in an area, community, or ecosystem
Species richness
The number of different species present in an area, community or ecosystem
Habitat diversity
The number of different habitats in a given area
Species diversity
The number of different species in a given area
Genetic diversity
The number of different alleles within a specie