In the winter of 2008, more than 1/3 of commercial beehives in the United States developed colony collapse syndrome  All worker bees in some colonies suddenly disappear or die, leaving only lonely queens in the hives  The syndrome has spread to many European countries, such as France, Belgium, Italy, Portugal and Spain  Without these bees, many crops related to human life would not exist, such as soybeans, cotton, apricots, sunflowers and so on  Almost 1/3 of the world's food is related to the behavior of bees
If they become extinct, it will be followed by serious social problems such as serious food shortages, hunger, violence and riots
Lack of food is the main reason for the disappearance of worker bees.