An interesting article from tutor2u
http://www.tutor2u.net/blog/index.php/economics/comments/gm-foods-will-be-vital-in-feeding-the-future-world
a) Assuming the argument and figures to be correct (and there are strong opposition arguments), draw a PPC diagram to show the effect on output of introducing these GM crops. Label one axis "GM crops" and the other axis "traditional crops"
b) Explain why you have drawn the change as you have
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