Ключевые слова: agriculture, barren, chapped, chart, clay, cracked, decrease, desert, desertification, discontinuous, drought, dry, environment, famine, feeding, fertility, fertilizer, flood, fluctuating, food, fruitless, global warming, graph, graphic, grass, ground, growing, heat, increasing, infertility, land, natural disaster, nature, outdoors, plant, plants, poverty, rain, rainfall, sand, scarcity, shortage, sowing, stem, sterility, sterilized, trends, weather, x axis, y axis,