Глобальный форум по продовольственной безопасности и питанию (Форум FSN)

There is a tree means that there are possibilities to grow more trees. When the rain comes, the water can be trapped by the trees, make its circumstances is more humid and the crops may grow as there is water supply in the ground. The more trees the more water can be kept in the ground and there is a possibility to make a well someday.