If the body temperature continues to drop, the work of internal organs like the liver may be increased and muscle activity in the form of shivering may begin, for muscular work is the main source of heat available to animals.
(the body temperature; continues; ) (the body temperature; to drop; ) (the work of internal organs like the liver; may be increased; ) (muscle activity in the form of shivering; may begin; ) (for muscular work; is; the main source of heat available to animals)
the body temperature the body temperature the work of internal organs like the liver muscle activity in the form of shivering for muscular work
continues to drop may be increased may begin is
the main source of heat available to animals