!.) Biodiversity is the variation of a species throughout an ecosystem
2.) Biodiversity forms the foundation of the vast array of ecosystem services that critically contribute to human well-being. and3.) <span>the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems.
Hope this Helps :)</span>
that they are not soluble with water
I think it is called a Case study.
Hopefully it is correct! :)
I would say A. Because it seems like a logical explanation.