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1.
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2.
Availablity of mant many species of plants and animals
Answered by dhanendra kumar jain, 21 Aug '08 09:45 am
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The most straightforward definition is "variation of life at all levels of biological organization". A second definition holds that biodiversity is a measure of the relative diversity among organisms present in different ecosystems. "Diversity" in this definition includes diversity within a species and among species, and comparative diversity among ecosystems.
A third definition that is often used by ecologists is the "totality of genes, species, and ecosystems of a region". An advantage of this definition is that it seems to describe most circumstances and present a unified view of the traditional three levels at which biodiversity has been identified:
* genetic diversity - diversity of genes within a species. There is a genetic variability among the populations and the individuals of the same species. (See also population genetics.)
* species diversity - diversity among species in an ecosystem. "Biodiversity hotspots" are ...more
Answered by LALITKUMAR RANA, 21 Aug '08 09:47 am
A third definition that is often used by ecologists is the "totality of genes, species, and ecosystems of a region". An advantage of this definition is that it seems to describe most circumstances and present a unified view of the traditional three levels at which biodiversity has been identified:
* genetic diversity - diversity of genes within a species. There is a genetic variability among the populations and the individuals of the same species. (See also population genetics.)
* species diversity - diversity among species in an ecosystem. "Biodiversity hotspots" are ...more
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