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In order to create a model of an atom, scientists have to scale
O a. Up
b. Down

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.

can i get the brainliest pls

explanation:

maybe because its impossible for balloons to lift a whole entire house.

what are the awnser choices? i mean, without choices, it is an incompleat