Biodiversity refers to the variety of life forms in a particular area. It suggests that different forms of plants and animals can be found in particular place at any point in time.
The tropical rain forest regions of the world are known to be the most biodiverse .
Biodiversity does not help to prevent flooding. Flooding is the inundation of water in a particular area. There is no correlation between flooding and biodiversity.
It is not biodiversity that helps to filter contaminants out of water. Special sands such as diatomite are used for this purpose.
