??? ???? ???? ????? ????? ???? ?????? ???? ???? ??? ??? ???? ? ???? ?? ??? ? ????? ??? ?????? ? ?????? ????? ?????? ???? ???? ????? ? ??? ????? ? ??????? ??? ??? ?????? ?? ????? ???? ??? ????? ????? .These are typically very long and skinny having a pointy end that is pushed or hammered into the bottom. They break down over time, offering nutrients