2. By: Carissa Levine And Sara Taylor Earthworm Frog Crayfish

3. Prostomium Genital Openings Clitellum Anus Setae

4. Claw Compound Eye Antennae Walking Legs Cephalothorax Abdomen This crayfish is 20 Cm long.

5. Tympanic Membrane Complex Eye Front Legs Hind Legs

7. Esophagus Crop Gizzard Intestine Anus

8. Digestive Gland Intestine (in tail ) Anus Mouth Stomach Esophagus

9. Cloaca Gall Bladder Esophagus Stomach Liver Small Intestine Mouth Large Intestine (before cloaca)

10. Esophagus Crop Gizzard Intestine Cloaca Gall Bladder Esophagus Stomach Liver Small Intestine Mouth Anus Digestive Gland Intestine (in tail ) Anus Mouth Stomach Esophagus Large Intestine (before cloaca) Bucal Cavity

13. Nerve Cord Brain

15. Moist Skin

16. By: Carissa Levine And Sara Taylor

17. http://www.mcwdn.org/Animals/Earthworms.html http://en.wikipedia.org/wiki/Earthworm http://faculty.washington.edu/chudler/invert.html http://members.tripod.com/~powerman486/info5.html http://www.angelfire.com/de2/atoy/cir.htm http://www.geocities.com/CapeCanaveral/Hangar/7649/Eworms/eworm.htm Holt Science Text Book Earth Science Text Book