Aspirations of students to keep the tank. Cause a foul according to various locations, as well as in the classroom. Make dirty classrooms and interested in learning.
Casualness of students into the trash bin. Causing the dirt to various locations, including in the classroom. Make dirty classrooms and less interested in learning.
Thoughtlessness of students in the trash, not tank. The dirty places as well as in the classroom. The classroom dirty and reduce the interest in learning.