Through what process does groundwater form? a. runoff b. percolation c. filtration d. evaporation

It would be A.

runoff is flow of water

percolation is extracting

filtration is basically separating

evaporation is liquid turning to gas

hope this helps :)

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:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.