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