The sandy beach system is important because:
they protect upland areas from erosion
homes to hundreds of organisms
provide recreation for humans
all of the above

The model illustrates a process by which a substance is taken up by a cell

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere

Long term exposure to waves can cause sunburns and skin cancer.