Nothing quite helps you to understand the vibrance of an ecosystem like witnessing decomposition and rebirth first-hand. I live on the lower floor of a duplex,

Nothing quite helps you to understand the vibrance of an ecosystem like witnessing decomposition and rebirth first-hand. I live on the lower floor of a duplex, and last fall people blew leaves from their lawn that ended up on my stoop which is about two feet below ground at its lowest point and is well-sheltered from wind. Most of the leaves have now decomposed into what appears to be a rich soil about half an inch thick with a fine covering of very dry, remaining leaves. You wouldn't believe how many earthworms I find if I explore even a small patch of this new terrain. Clover-like lichens are spreading down the three steps and have begun to take root on the stoop itself. All on top of brick! What this guy is doing is pretty awesome.