Helium is a gas with a limited supply. It is formed over thousands of years from decaying radioactive rocks. The US government owns $35\%$ of the world’s supply and has been selling its stocks. Helium is vital in medical scanners. It is also used for party balloons, which some people regard as a wasteful use of a valuable good. Which concepts can be applied to the statement above?
- Ademand and supply, government subsidy
- Bexcess demand, resource allocation
- Cfactors of production, private monopoly
- Dopportunity cost, public sector