Im not in middle school but i need help can someone help me decribe this .

"As the bone slowly decay, minerals filter down into space and replace the chemicals in the bones." ???

Btw this is about fossils and i have tooturn this whole packet in like some hours or else i wont pass the year

The pic is howmuch i have leftits alot and most of it is work ihad too do in groups but since i had been sick the whole week i couldnt do this , im noteven halfway done my mom expects me too finish fast and too just invent something in the group activities i kinda feel likethe teachers just wanted me too finish this . I wonder if they will check the whole work. If they donti will never forgive my mom for wasting my summer I HAD TOO WASTE A WHOLE FRICKING MONTH ON SUMMER SCHOOL i was supposed too finish my 200 chaptered manga BUT SINCE I HAD SUMMER SCHOOL .IONLY HAVE ONE MONTH LEFT it makes me so mad​