Biodiversity refers to the variety of life on Earth at all its levels, including genes, species, ecosystems, and the evolutionary and functional processes that link them. It includes diversity within species, between species, and of ecosystems. The conservation of biodiversity is important for ecological, genetic, social, economic, and aesthetic reasons.

2. Biodiversity and its
Levels
By
Mr. Allah Dad Khan
Visiting Professor
The University of
Agriculture Peshawar