" Define biodiversity? "

The UN Earth summit, which defined Biodiversity, was held in the year:

How are botanical gardens useful in conserving biodiversity ? Define the terms Flora, manuals, monographs and catalogues ?

What do you mean by biodiversity? What are the different types of Biodiversity?

What do you mean by biodiversity? What are the various ways of measuring biodiversity?

What are biodiversity hot spots ? What is the measure of the biodiversity ?

What is biodiversity ? Explain the ecological benefits of biodiversity ?