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All invertebrates have no backbone and most usually have a had covering much like a wax water proof covering, also all invertebrates can be traced back to have ancestors that were once only aquatic.

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12y ago
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13y ago

Invertebrates are animals that do not have a backbone
All invertebrates lack a backbone, and have no spinal columns. Other than this defining characteristic, invertebrates vary wildly, and have few similarities with each other.

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14y ago

they all have no backbone and they hatch from eggs

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13y ago

They don't have a backbone/spine and so on

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12y ago

because invertabrates have back bones a verterbrate does not

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13y ago

they don't have a back bone

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11y ago

They are all echinoderms.

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Q: How are all invertebrates alike?
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