The CPI takes a constant basket of goods and sees how the price changes from year to year. If the price of the basket of goods increases, then there is price inflation. If the price of the basket of goods decreases, then there is deflation.
Copper and tin mainly make up bronze but other elements include phosphorus, manganese, silicon and aluminium.
Find out what bronze is made up of with fun facts from dk find as it a mixture two metals, technically known an alloy metal. Difference between brass and bronze youtube. Apr 25, 2017 ancient bronze was usually made up of copper, tin and small amounts noble metals or lead.