All about the threats to biodiversity...

...can be found here! http://www.globalissues.org/article/171/loss-of-biodiversity-and-extinctions#MassiveExtinctionsFromHumanActivity

Biodiversity means the variety of life on Earth (i.e. its biological diversity) and it is threatened due to human (in-)action. The loss of biodiversity is extremely costly in many ways, economical and other values, and is of course at greater danger due to global warming. Quite depressing, but important reading!