How can you tell if a pun is a dad joke?
When the punchline is a-parent.
Special Thanks to:
Gentle Readers everywhere.
Manure, Bat (high N)
Old powdered bat poo from caves.
Micronutrient values may show a zero value for missing data. Over time the dataset will improve, but keep in mind that in some instances; especially with natural materials, the listed values given are rough estimates and will vary with samples from different sources.