Question

Which of the following is referred to as "Evil Quartet'' reference to the loss of biodiversity?

• A. Species richness, extinctions, deforestation, era
• B. Habitat loss and fragmentation, over-exploitation, alien species invasion, co-extinction
• C. Overexploitation, grazing, decomposition, extinction
• D. Habitat destruction, co-extinction, deforestation species richness

Answer 1

Answer: (B)

Biodiversity includes all the flora and fauna on Earth. All the varieties of organisms come under biodiversity. Ecologist say that without any doubt there is decline in the biological wealth which is more rapid due to the activities of us humans. The causes for such high rate of decline is referred to as 'Evil Quartet'. The four main reasons are also known as 'the four horsemen of the ecological apocalypse'. The reasons include overexploitation, loss of habitat, alien species invasion and co- extinction of species.