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One of the differences between Cambrian animals and pre­Cambrian animals was the

appearance of _________________________ such as antennae as Cambrian animals evolved.

2 Answers

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The answer to your question is

Appendages

User Raj Saraogi
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One of the differences between cambrian animals and precambrian animals was the appearance of Appendages such as antennae as Cambrian animals evolved

The antennal appendages will increase the sensing abilities of the animals

hope this helps
User Pdeschen
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