Biodiversity

Without biodiversity the earth goes toward a desertification.

We consider the "biodiversity" both like variety of species inside a different ecosystems and like different genetic caracteristics inside the same population: every individual is different from any other.

The importance of this kind of biodiversity is revealed when in a population there is some pathogenic germ.

If all individuals were cloned, the species would run the risk of the extinction because all could fall ill.

Only genetic differences allow the evolution of the species.