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The Brainliest Answer!
2016-02-28T16:08:01+05:30
The Arthropods have an open circulatory system so that the blood does not flow in well defined blood vessels.
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  • Brainly User
2016-02-28T16:08:50+05:30
Because they have no arteries and veins so they have  open circulatory system
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