Brazil nuts (Bertholletia excelsa) are produced by an enormous forest tree (up to 50 meters tall and over a meter in diameter) which is widely distributed throughout the upland forests of Colombia, Venezuela, Peru, Bolivia and Brazil. The commercial exploitation of this species was initiated over 150 years ago. During the past thirty years, the annual harvest of Brazil nuts has fluctuated between 40,000 and 100,000 metric tons.
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