Plate boundaries where plates move toward each other are called transform boundaries.
convergent boundaries.
divergent boundaries.

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.

you should wear a lead protective shield when having teeth x-rays

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-lavira : )