>The biosphere is the most complex system known, so I ask you again sir -
>how can you claim that this complex web of life is in large part
>unnecessary to our survival? What evidence do you have?
The plants we use for our farm ecosystems have been studied in
the field for thousands of years with biodiversity gone, in
the Nile, Tigris-Euphrates, Indus, Ganges, and Hwang Ho river
valleys, and they do great. Laboratory studies of these same
organisms has revealed the reason for this; these plants
grow fine, indefinitely, in systems in which they are the only
things alive, as long as they are provided with an impressively
short list of nutrients.
Can you name even one organism that needs biodiversity to survive?