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28 March, 19:17

Black widow spiders are considered the most venomous spiders in North America. They are roughly 1.5 inches long. Black widows have a life cycle of one to three years. Is a black widow spider a vertebrate or an invertebrate? Be sure to justify your answer.

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  1. 28 March, 21:47
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    A black widow spider is classified as an invertebrate. It does not have a backbone or internal skeleton. It has an exoskeleton. The life cycle for the black widow spider is short.

    Explanation: I took the test and this was the sample response.
  2. 28 March, 22:29
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    The black widow spider is an invertebrate. Its skeleton system hangs outside its body. The only difference between a vertebrate and invertebrate is the presence of backbone or a similar kind of structure with in the body. In case of black widow spider, the internal structural element is missing. Its skeleton system can be classified as exoskeleton.
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