List major characteristics of animals-are heterotrophic, multicellular, use absorptive nutrition, have no cell walls, usually have nerves, muscles and the ability to move2.explain possible reasons why the cambrian period led to a rapid increase in animal diversity

Answer No 1:

The major characteristics of animals are:

Answer No 2:

There are a number of reasons why the Cambrian Period led to a rapid increase in animal diversity. Some of the reasons are:

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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