As we move past the relatively gigantic mammals, birds, frogs and plants to the more elusive insects and other small invertebrates and then beyond to the countless millions of organisms in the invisible living world enveloped and living within humanity?
Kako se udaljavamo od prilično krupnih sisavaca, ptica, žaba i biljaka prema zagonetnijim kukcima i drugim sitnim beskralježnjacima, te dalje prema milijunima organizama u nevidljivom živom svijetu, učahurenima unutar čovječanstva?