what have a circulatory system?
protist fur seals veins mammals animals bacteria mussels sharks
A B C D E F G H
Mussels are bivalve mollusks.
mussels have a circulatory system
what have a circulatory system? (A) protist (B) fur seals (C) veins (D) mammals (E) animals (F) bacteria (G) mussels (H) sharks