In ancient days a tribe of natives on the mythical continent of Atlantis was able to produce two commodities to eat. They could harvest fish from the sea and they could grow a form of wild oats.Table 1.a. and Graph 1.a. both show the maximum annual output combinations of fish and wild oats that could be produced by the natives of Atlantis.

Could the Atlantis tribe have produced800 bushels of wild oats and 5,000 kilograms of fish at the same time? Explain your answer. Where would this point lie relative to the production possibility frontier?
Using Table 1.a., what would have been the marginal opportunity cost of increasing the annual output of wild oats by 200 bushels, from 300 bushels up to 500 bushels?
Using Table 1.a., what would have been the marginal opportunity cost of increasing the annual output of wild oats by 200 bushels, from 625 bushels up to 825 bushels?
Whyare the marginal opportunity costs for two similar batches of 200 bushels of wild oats not the same? Explain. What does this difference imply about the shape of the Atlantis tribe's production possibility frontier curve?

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Table 1.a. Maximu Bushels m annual Kilograms of wild of fish output oats options 7,000 6,000 2 300 500 3 5,000 4,000 625 5 3,000 710 2,000 775 1,000 825 850 4, Graph 1.a. - Atlantis Tribe's Production Possibility Frontier 8,000 7,000 0,7,000 6,000 300, 6,000 5,000 500, 5,000 tilograms 4,000 625, 4,000 of fish 3,000 710, 3,000 2,000 775, 2,000 1,000 825, 1,000 850, 0 100 200 300 400 500 600 700 800 900 Bushels of wild oats