7th Grade Science Unit 1 - early life

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Why doesn’t the fossil record show all organisms that have ever existed?

Fossilization is rare, soft-bodied organisms decay, and many

Fossilization requires certain conditions. Which of the following helps a fossil form?

Rapid burial in sediment

What is the significance of the “digits” in the pattern?

allow animals to swim, walk, climb, or manipulate objects

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