Discussion Money and Banking

Money is used as a means to make a payment, store of value (savings), and place value on goods and services most economist believe money contributes to economic growth and development by make it easier for people to complete their transactions. Barter is the exchange of goods and or services without the use of money. However, "if money did not exist we would invent it" as stated by some economists.
What is money? Discuss the Money Supply (M1 and M2).
Discuss how money contributes to economic growth and\or development?
If there is no money will society find a way to exchange goods and services without it? Explain.