Out of 30,000 known edible crops, only 170 crops are grown on a commercially significant scale today and just 3 staple crops (rice, wheat & maize) provide 40 % of our daily calories intake.
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Out of 30,000 known edible crops, only 170 crops are grown on a commercially significant scale today and just 3 staple crops (rice, wheat & maize) provide 40 % of our daily calories intake.