Ecosystems that have biodiversity are very productive, recycling nutrients easily and quickly. Such ecosystems are healthy, self-sufficient and better able to overcome disasters. Biodiversity acts as a system of checks and balances; if one part of an ecosystem weakens for awhile, stronger parts help it survive.
High levels of biodiversity provide natural resources and services to each animal and plant species in an ecosystem. Different species can protect water and soil resources, store and recycle nutrients, break down pollution and contribute to the climate's stability. High levels of biodiversity also help maintain ecosystems and help them recover from chaotic events such as volcanic eruptions, droughts, floods and deforestation.