Does a frog have an open or a closed circulatory system?
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frogs have closed circulatory system
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Then, there is the closed circulatory system - this is the type vertebrates like fish, mammals, and amphibians have. With this type, the blood and other fluids stay inside a set ofblood vessels and are never freely released into the body cavity.
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Then, there is the closed circulatory system - this is the type vertebrates like fish, mammals, and amphibians have. With this type, the blood and other fluids stay inside a set ofblood vessels and are never freely released into the body cavity.
ΠΠΠΠΠΠΠΠΠΠΠΠ
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