Multicellular organisms grow by producing more cells. As children, we get taller every year. That growth happens only because our bodies keep adding new cells. A sapling becomes a tree for the same reason.
But even after an organism grows up, its cells continue to divide. That's because cells wear out or get damaged.
Read more: Life Cycle of a Cell - Replacing Cells, Cell Division, Growth and Repair:, Mitosis, Specialized Sex Cells, Meiosis, Plant Sex Cells
Because in electrolytic cell energy is converted from electrical to chemical.
It creates mid-ocean ridges
When the leaf branch is covered with a polythene bag, tiny water droplets are seen because of transpiration. The leaves lose access amount of water present in the plant through this process. Stomata ( small pores present on the surface) of the leaves are responsible for this.
Due to the oxygen content of the blood. same reason why blood is bright red when you get a cut.