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  1. While biofuels may be a small part of the prblem– they’ve certainly driven up the price of corn and meat– the shortages of rice and wheat likely have other causes: overpopulation and bad weather. The rice shortage began in India, which in a single year switched from being a major exporter of rice to being an importer. The wheat shortage seems to have been caused by the rice shortage, as those who used to eat rice switch to a more available food.

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