biodiversity : Refer to all species in one region or ecosystem, every living things and their relationsip. Different scale : Gene / individual species / communities / ecosystems

8,7 million species of plants and animals but only 1,2 million are identified ---> Mysterious

A species is somethings who evolved and who is different from other species and they can no longuer reproduce

Living in many ecosystem (Forest / Grasslands / tundra)

Hotspots : Areas in the world that have more biodiversity than others (Mexico/ Sth Africa / Brazil etc...)

Endemic species : Only found in one particular location

All the species had a big relationship with ecosystems and they work together to survive and maintain their ecosystems

Lots of spieces provide important benefits to humans (food / clothing / medecine)

Half of all species on Earth will be wiped out within the next century

Protection from cyclones and tsunamis by coral reefs

Tortoises and spider monkey maintaint stable climate by dispersing fruits

Tree can remove carbon dioxide from the atmosphere

All biodiversty could be estimated at trillions of dollars

Each organism is richer in information than other things

75 % of flying insects were lost in 25 years in Germany

5 % of species on red list but 25 % of mammals, 41 % of amphibians and 13 % of bird are in danger

Space and protection like wildlife reserves today its 15 % of terrestre and 7 % of ocean

Relatioship between local population and wildlife

tourist hunting for money and controlling animal populations

Different consommation of our alimentation

Estimating the financial value of ecosystem service

Decline of 68 % of population of mammals / fish / birds / reptile / amphibien since 1970

3/4 lands and 66 % oceans had been alterned

Mining