Food crops are plants that are grown and harvested for human consumption and can pertain to grains, fruits, or vegetables. Plenty of factors can affect the production viability and subsequent popularity of food crops, and these can include anything from local climate conditions and existing culinary traditions to trade and economic policies, among others. Through a combination of such factors, certain food crops can emerge as the most popular source of nourishment in specific geographic regions of the world, becoming what are known as food staples.