Fact 1: Mollusks have a circulatory system with one or two hearts that pump blood. Fact 2: An abalone is a shellfish or mollusk. Given the two facts above, what has a circulatory system with one or two hearts that pump blood?
Select from: (1). a fish (2). sharks (3). abalone (4). elephants (5). humans (6). crocodiles (7). giraffes (8). fur seals
(3).