According to the definition given by the World Wildlife Fund (1989), biological diversity is “the diversity of life forms on earth, millions of species of plants, animals, micro-organisms and their gene sets and complex ecosystems that make up the wildlife.” Thus, biological diversity should be considered on three levels. Biological diversity at the species level covers the entire range of the species on Earth from bacteria and protozoa to multicellular kingdoms of plants, animals and fungi. In a smaller scale biological diversity includes the genetic diversity of species, formed as a geographically distant populations and individuals within the same population. Biological diversity also includes a variety of biological communities, species, ecosystems, formed communities and the interaction between these levels.
Use free sample research papers on the topic to understand the idea that biological diversity includes the genetic diversity (genetic variation within each species), species diversity (set of species in the ecosystem) and the diversity of the communities/ecosystems (habitats and ecosystems in this area) necessary for continuous survival of species and natural communities at all levels of biological diversity. Continue reading “Free Essay on Biological Diversity”