Why do geese form a "V" shape when flying south?
Air resistance must be overcome, and the formation of geese is arranged for this purpose. The geese in the back use the airflow generated by the flapping wings of the geese in front to make their flight more labor-saving. For human beings, the inspiration of geese is very valuable. Society is a team spirit, ethics is a concern between the young and the old, and science is even more important. Therefore, although I have witnessed the geese resting on the bank of the Yellow River mouth swallowing wheat seedlings during the migration, I still like them and I am disgusted with those who beat the geese with old guns.