Construct a PPF for a country that produces food and video games and faces increasing opportunity costs. Show how the PPF changes given the following events.
a- A new and better fertilizer is developed
b- The country receives immigrants who work both in the food and video game industry.
c- A heat wave and a drought result in a reduction of 10% in the land that is being farmed.
d- Programmers develop a new programming language that that is much less costly to code and is much more memory-efficient.