Question

What is biodiversity ? Why it is different in different places ?

Answer 1

Biodiversity refers to the number of biological species that exist in a given region. High biodiversity means that a region supports a wide variety of species, while low biodiversity implies that an area supports only a few. The reasons for variances in biodiversity are complex, but they include both natural and man-made causes.
The term “biodiversity” refers to the variety of life forms in a habitat, whether it’s a local environment or an entire planet. Most of the species making up our planetary biodiversity are still poorly studied or completely unknown; experts estimate that there may be at least four times as many complex (eukaryotic) species alive on our planet as the 1.9 million that have already been discovered and named, possibly more.


If you accept the concept of natural selection (and you may not), then different types of plant and animal evolve to occupy different niches within an environment. Different conditions such as temperature, humidity etc will favour one form of animal / plant over another. So differences in place create differences in bio-diversity.