<P> The relationships between the original natural areas of these often exotic animals and plants and commercial collectors, suppliers, breeders, propagators and those who promote their understanding and enjoyment are complex and poorly understood . The general public responds well to exposure to rare and unusual organisms, reflecting their inherent value . </P> <P> Philosophically it could be argued that biodiversity has intrinsic aesthetic and spiritual value to mankind in and of itself . This idea can be used as a counterweight to the notion that tropical forests and other ecological realms are only worthy of conservation because of the services they provide . </P> <P> Biodiversity supports many ecosystem services: </P> <P> "There is now unequivocal evidence that biodiversity loss reduces the efficiency by which ecological communities capture biologically essential resources, produce biomass, decompose and recycle biologically essential nutrients...There is mounting evidence that biodiversity increases the stability of ecosystem functions through time...Diverse communities are more productive because they contain key species that have a large influence on productivity and differences in functional traits among organisms increase total resource capture...The impacts of diversity loss on ecological processes might be sufficiently large to rival the impacts of many other global drivers of environmental change...Maintaining multiple ecosystem processes at multiple places and times requires higher levels of biodiversity than does a single process at a single place and time ." </P>

Which of the following is true about the distribution of earth's biodiversity