Biological diversity

All living creatures on Earth can be grouped into species. Species are groups of organisms that look alike, have a similar way of existence and behaviour, and share a like chemical composition and genetic structure. Organisms of a given species that reproduce sexually must be able to procreate prolifically.

One of the most important and precious resources on Earth is its diversity of biological species, known as biodiversity. This resource is comprised of three components .

Each living organism is in itself a resource of genetic information, which allows it to adapt to changes in its environment. For millions of years new species have emerged, while those that have failed to adapt have disappeared.

Species extinction is a natural process. The speed of this process, however, has accelerated rapidly with the rise in urban development and the expansion of human activity.

Food and energy pyramid 

What nature gives us