by Ana Santamaria and Ashley Sauceda
grade of construction: organs derived from three tissue layers
Earthworms come in a seemly infinite variety—around 6,000 species worldwide.
Lacking lungs or other specialized respiratory organs, earthworms breathe through their skin.
Each earthworm is both male and female, producing both eggs and sperm.
Baby worms emerge from the eggs tiny but fully formed
Full size for an earthworm varies among species, ranging from less than half an inch long to nearly 10 feet.
if you split one in have you now have two of them
in Latin Annelids means little ring
can be found in salt fresh water as in soil