What three ways do the stirring movements associated with upwelling and downwelling benefit life in the ocean?

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

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above