Name the type of circulatory system found in the phylum Arthropoda
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Open circulatory system

Explanation:

An open circulatory system, found in arthropods, pumps blood into a cavity called a hemocoel where it surrounds the organs and then returns to the heart(s) through ostia (openings). The blood found in arthropods, a mix of blood and interstitial fluid, is called hemolymph.Arthropods have an open circulatory system. In an open circulatory system, blood isn't transported in the body through veins and arteries; it flows freely within body cavities and makes direct contact with the organism's internal tissues and organs! Most arthropods that live in the water have gills.

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the correct answer would be 6 feet.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation: