11.1

• Biodiversity is important for maintaining a balanced ecosystem as all species are interconnected so depend on each other
• Habitat biodiversity is the number of habitats in area
• Species biodiversity is the species richness & species evenness
• Species richness is the number of different species in an area
• Species evenness is the abundance of each species relative to the others in an area
• Genetic biodiversity is the variety of genes that make up a species e.g different alleles
• A Keystone Species is a species which has a significant impact on the environment so other species rely on it