|Biodiversity is defined as the various forms of life within an ecosystem, (1).
So with that definition, loss of biodiversity means the decline in the variation of species within an eosystem. Many things can contribute to the loss of biodiversity. Global warming, poachng, intraspecies and interspecies competition extinction, and pollution are just a few of these contributions.
This loss of biological life is not limited to animals. Plants and microorganisms are affected by this as well. Biodiversity stabilizes the ecosystem, so with a low biodiversity, the ecosystem can become unbalanced, and less proficient and effective for the survival of each species involved, (2).