Ответ учителя по предмету Биология
конечно нужно
листья опадают ,потому что недостаточно минеральных солей в жилах и солнце не дает им солнечную энергию осенью как летом
тогда они опадают и начинается перегнивание
прикинь какая вонь если не убирать это
это уже почти гумус он воняет и похож на кое что
поэтому их собирают и отвозят в определенное загородное место , где делают из них удобрение вот
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