All you need to know about earthworms, including why they are so
By A Mystery Man Writer
Description
All You Need to Know About Earthworm Castings
identifying earthworms - WormWatch
Insects & invertebrates
What are worms? - The Australian Museum
Will Two Worms Grow from a Worm Cut in Half?, Earthworms
Getting the dirt on earthworms
Wildlife Countryfile
Earthworm National Geographic
Top 10 earthworm facts – NFUonline
earthworm 101, with great lakes worm watch - A Way To Garden
Crazy Worms' Threaten America's Trees And Maple Syrup : NPR
Composting Helpers: Facts About Red Worms
Insects & invertebrates
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per adult (price varies by group size)