Extent of Glaciation
Forest Without Worms
Forest Without Worms
Understory Without Worms
Understory Without Worms
Soil Horizon Without Worms
Soil Horizon Without Worms
Ovenbird
http://www.youtube.com/watch?v=v41-hFzfeRs
Nightcrawler Lumbricus terrestris
Redworm Lumbricus rubellus
Amynthas agrestris