The production possibility frontier (PPF) can be used to explain opportunity cost and highlight the trade-offs between different resources.
The Production Possibilities Curve in Economics
Production–possibility frontier - Wikipedia
Production Possibility Frontiers
B.6 Production possibility frontier
The Production Possibility Frontier - ppt video online download
The Production Possibilities Curve (Frontier) Explained
The production possibility frontier
Production Possibility Frontier - Definition, Curve, Example
Draw a production possibility frontier with potatoes on horizontal
Production Possibility Frontier (PPF) - economics4u