Online Public Access Catalogu . Abdel Hafid Boussouf University Center of Mila.

A genetically determined characteristic that enhances the ability of an organism to cope with its environment.

Biological equilibrium Ecosystem stability

Développement durable
Environmentally sound development, which meets the needs of the present without compromising the ability of future generations to meet their own needs.
Écologie
Use for the study of relationships between living organisms and their natural environment.
Effet des activités humaines