Most grains are used as food either for people or for livestock. But the increase in human consumption has been slowing for decades as population growth moderates.
The steadily growing world population and increasing incomes creates higher demand for meat, but at the same time leaves limited space for expansion in livestock production.
世界人口的不断增长和收入的提高都导致对肉类消费有更高的需求，但同时对扩大畜牧生产的空间造成限制。
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In Niger, more than 7 million people, about half of the population, lost their crops and livestock in a severe drought.