A body is found submerged with the facial bones exposed, torso with some bone exposure, and bones of the hands becoming visible. Which stage of decomposition best describes each of the body segments...

A body is found submerged with the facial bones exposed, torso with some bone exposure, and bones of the hands becoming visible. Which stage of decomposition best describes each of the body segments (head, torso, limbs)? What is the Accumulative Degree Days (ADD) of the remains? A man from the area has been missing for 2 years; could these remains be his?