.1 biodiversity

• Biodiversity is the variety of all the different species of organisms on earth, or within an ecosystem.
• The loss of biodiversity can have negative effects on ecosystem functioning
• A great biodiversity ensures the stability of ecosystems by reducing the dependence of one species on another for food, shelter and the maintenance of the physical environment.
• The future of the human species on Earth relies on us maintaining a good level of biodiversity. Many human activities are reducing biodiversity and only recently have measures been taken to try to stop this reduction.