What are the two reasons why fossils of early life don't fossilize well?

Organisms decompose additional quickly after they square measure up-to-date with element. ... once Associate in Nursing organism is buried quickly, there's less decay and also the higher the prospect for it to be preserved. The arduous components of organisms, like bones, shells, and teeth have an improved probability of turning into fossils than do softer components.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

the median of the data is 4.5.