Mollusks have a circulatory system with one or two hearts that pump blood.
Blood is pumped by the heart into blood vessels called arteries.
Mollusks have a circulatory system with one or two hearts that move blood into vessels called arteries.
Mollusks have a circulatory system with one or two hearts that move blood into what?

  - eyes
  - caverns
  - body water
  - food
  - lungs
  - allow growth
  - drink
  - arteries