Imagine you are playing a game with your friends and sometimes someone might do something that is not fair or hurts others. In the grown-up world, people have to make sure that everyone is playing fair and not hurting others when they are doing important things, like when doctors are trying to help people get better.
There is a group of grown-ups called the "ethics committee" that is like the referee in your game. They are there to make sure that everyone plays fair and nobody gets hurt. They look at all the things that people are doing and they decide if it is okay or not okay.
The ethics committee often talks about what is right and wrong to do. They follow special rules called "ethics codes" which are like rules that everyone has to follow when they're doing important things, like being a doctor or a scientist.
Sometimes people ask the ethics committee to help them make a decision. For example, a doctor might have to decide whether to give a medicine to a sick patient that might cause side effects. The doctor might ask the ethics committee to help make that decision.
The ethics committee is made up of people from different backgrounds, like doctors, nurses, lawyers, and community members. They work together to make sure that everyone is doing the right thing and nobody gets hurt.