In this article I'm going to explain the use of the analytic functions RANK, DENSE_RANK and ROW_NUMBER to rank the results of your query.
Crop diversification refers to the addition of new crops or cropping systems to agricultural production on a particular farm taking into account the different returns from value-added crops with complementary marketing opportunities. Major driving forces for crop diversification include: â¢ Increasing income on small farm holdings
Promoting wildlife conservation could help secure future food supplies. Action Biodiversity (AB) argues that crop diversity in agriculture makes food supplies less vulnerable to disease. Individual crops can suffer different diseases, while an entire field of just one crop could succumb to a single blight.