Do you really think that the dust mites in the carpet, spiders in the basement and potato bugs in the garage would outnumber the number of organism's in a couple of thousand square feet of Appalachian wilderness?
You might be Green, but you must have never been camping up in those mountains.
I must have misread your post. The diversity outside in any setting would be much higher than in a home. I thought you were saying that humans outnumbered other species within your home.