WORLD ENVIRONMENT DAY BANNERS,xxx,now the earth is in bad condition. for example, in some places, the air and water pollution is so serious that it causes many deaths. at the same time, many animals and plants are in danger because of the destruction of their habitats,目录,01,地球日的由来,now the earth is in bad condition. for example, in some places, the air and water pollution is so serious that it causes many deaths,2020年4月22日是第,50,个世界地球日喔,地球日的由来,世界地球日，这一纪念日起源于美国。1970年的首次“地球日”声势浩大。美国各地约2000万人参加，被誉为二战
