Excretory System

1: (a) Ammonia, 2: (b) Ammonia, 3: (c) Liver, 4: (d) Uric acid, 5: (a) Marine fish, 6: (b) Uric acid, 7: (c) Protonephridia, 8: (d) Nephridia, 9: (b) Green glands, 10: (a) Malpighian tubules