1.what is the location of the nerve cords in Sea star , flatworm , octopus and human?
2.what is the nervous structure is used by Sea star, flatworm , octopus and human to respond to its environment?
2.what is the nervous structure is used by Sea star, flatworm , octopus and human to respond to its environment?
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1.Invertebrates are those animals without a backbone (spinal column). Invertebrates include animals such as insects, worms, jellyfish, spiders - these are only a few of the many types of spineless creatures.
2.?