Given the question: Fact 1: Mollusks have a circulatory system with one or two hearts that pump blood. Fact 2: Clams, oysters and snails are familiar mollusks. Given the two facts above, answer the question "have a circulatory system with one or two hearts" with the following options: - Birds - alpacas - elms - Clams - salmon - animals - toads - complex
The answer is:
Clams