The 6 carbon molecule resulting from carbon dioxide fixation immediately breaks down to form

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation:

wegner's theory did not explain how the continents could move

explanation:

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.