Old existing cells.......
C the content is current but It might be D
Answer:
Do you want a ligit answer or...
Explanation:
i will answer this, but youre gonna be scared if you ask me to do it.
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Speciation is the
process by which new and distinct species are formed. One of the most important
factors necessary for speciation to occur is the genetic isolation of two
populations. This genetic isolation can, over long periods of time, cause these
two groups to become genetically incompatible. Factors that can lead to this
genetic isolation include geographic separation and hostility among population
groups.