Organ systems work together so life processes like breathing and digestion can be carried out, keeping many-celled organisms, like you, healthy and alive. When a group of parts work together, they form a system. A group of organs working together to carry out a specific life function is called an organ system.
A prefix is a part of a etymology that modifies are word at the start of it: i.e. reconsider, involuntary, uncover.
A suffix is the same thing but it modifies the end of a word: i.e. walked, bigger, reversible.
De is a prefix meaning "down, away" or "denoting removal or reversal". In this case it is referring to demagnetizing something, or removing the magnetization.
Ize is a suffix meaning to "make or become". This is referring to an object becoming magnetized.
