A lot of things have been said about ecological problems such as global warming, deforestation and pollution. However, one of the (SERIOUS) problems today is the appearance of more deserts and droughts. In December 1994 the4 United Nation Assembly (HAVE) a meeting. The result of the meeting was the document called the "Convention to Combat Desertification in (THAT) Countries Experiencing Serious Drought and/or Desertification, Particularly in Africa". (desertification - опустынивание The UN Assembly also declared June, the (SEVENTEEN) the World Day to Combat Desertification and Drought. The assembly agreed that desertification and drought (BE) global problems because they affected all regions of the world. The assembly also realized that combined action (NEED) to fight desertification and drought.