Biodiversity
Biodiversity is an abbreviation of 'biological diversity'. It concerns the variety of life at all levels: from genes to species to ecosystems. The 1992 United Nations Convention on Biological Diversity (CBD) defines it as:
'the variability among living organisms and the ecological complexes of which they are part, including diversity within and between species, and of ecosystems.'
Therefore all living things, the habitats in which they live, and the ecosystem processes that allow them to function effectively, are all bound up in the web of biodiversity.