为迎接6月5日“世界环境日”，学校学生会准备举行一次以环保为主题的英语演讲比赛。请你根据以下内容写一个书面通知，欢迎大家积极参与。

[写作内容]
[写作要求]
只能使用5个句子表达全部内容。
注意：通知的开头和结尾已为你写好。
Notice
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
 
The Students’ Union