1. Why are scientists concerned about the depletion of ozone in the stratosphere?
2. What is causing the depletion of ozone in the stratosphere?

3. Explain how this situation was nearly an example of the Tragedy of the Commons?

4. How was catastrophe prevented?

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).