Primary school students' proposals on environmental pollution

Dear principal:
Hello! I am a student at your school. Today I want to talk to you about the environmental pollution of the school.
In the past, the campus environment was beautiful, the trees were shaded, and the birds were screaming all day long. Such a campus is a good place to learn. But now: every time you finish the package, you will see the litter box and the milk box. When the cleaners were just cleaned, someone threw the rubbish on the ground, sometimes with a disgusting smell. The students did not consciously throw the bags on the ground or something. Based on the above questions, I have the following suggestions:
First, let the teacher tell the students about the importance and harmfulness of environmental pollution, and hold a campaign on the theme of “protecting the environment and starting from me”. It is recommended that everyone start from a piece of paper and a leaf to protect our campus.
Second, we must organize some small environmentalists to stop when they see students throwing litter. And put some slogans on the campus to protect the environment.
I hope that the above proposal will help you manage the environmental pollution of the school.
Our students: