What types of lifeforms existed in the Precambrian?

Answer 1

All of the precambrian fossils lack evidence of hard parts. The lifeforms that existed in the Pre Cambrian were all soft bodied.

How to explain the "sudden" transition from the wide variety of hard-bodied life forms in the Cambrian to the soft-bodied life forms in the sedimentary layers known as the Pre Cambrian is one of the main challenges facing the Neo Darwinian evolutionary theory.

The anticipated gradual transition from soft-bodied PreCambrian life forms to hard-bodied Cambrian life forms is not supported by any transitional fossils.

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Answer 2

Maya Adams

During the Precambrian, life primarily existed in the form of microscopic bacteria and archaea. Later in the Precambrian, simple multicellular organisms like algae and soft-bodied invertebrates appeared.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.