Biodiversity is defined as different forms of life like animals, vegetables, bacteria, etc... in reletionship with thier environnement.
all for us are responsible to protect every area for the developpment and perrenity of biodiversity.

The definition does not involve people. You need a definition which approaches the ordinary human being and footprint with its action.
may not need to be a very scientific definition, but intensely human: heal, feeds, protects, gives housing interacts with you and the environment around you.

We can see biodiversity from two side, social side and natural side, I mean scientific side.
It will be, biodiversity is our interact between people's, from little part like our neighbor, till the wide part do interaction around people the world.
Also, biodiversity is interaction between human and their environment, Biotic or Antibiotic. Human with animal's, human with plant's and human with stone, soil, building and the others.
The summary, biodiversity is all part our life.
If we want safe our life and our generation for the future, so safe our biodiversity.