1. Use what you have learned about externalities to explain face mask requirements implemented by governments and/or businesses. In your discussion, you'll want to identify the transaction (including who participates in it), and then the externalities created by the transaction, including who receives the externalities and whether they are positive or negative. Graphs are encouraged but not required.2. Use what you have learned about externalities and public goods to explain vaccination requirements implemented by governments and/or businesses. In your discussion, you'll want to identify the transaction (including who participates in it), and then the externalities created by the transaction, including who receives the externalities and whether they are positive or negative. In terms of public goods, do vaccinations and vaccination requirements represent a public good? Explain why or why not. Graphs are encouraged but not required