Question

Are the following correct?

1. Biodiversity
It is the variation and variability of organisms within species, between species and between ecosystems.
OR
Biodiversity is the variation and variability of organisms within species and between species in a given area and also the variations(i.e. diversity) in ecosystems.

2. Ecosystem diversity
Is it the diversity of organisms in a particular type of ecosystem over different regions of the world, or, as defined by wikipedia it is the diversity of ecosystems in a given geographical region?

Answer 1

1. Biodiversity is the variation and variability of organisms within species and between species in a given area and also the variations (i.e. diversity) in ecosystems.

2. Both definitions are right. Their application depends on either we talk about organisms or ecosystem.