Radioisotopes tell scientists that the earth is 4.5 billion years old.
Answer:
It can go to waste because people think since it's renewable and they don't have to worry about running out of that certain rescourse that they can use it for purposes it was not intended for.
Explanation:
Calcium ions are involved in many mechnisms: for example, stabilization of cell wall structures, acidic growth, ion exchange properties, control of the activities of wall enzymes. All these properties originate from the tight binding of calcium ions to the pectins present in the cell walls.
All that is stored in a cell it's called the vacuole in a human or animal, its the stomach
