The Muscular system. If you look at the human body, you see we're made of layers. 1st layer is the skeleton, the maintains the body's shape, then you have the 2nd layer, the muscular, this provides the ability of movement. And the layers keep going until you get to the skin.
Answer:
It is important to use hand sanitizer and wash your hands in a science laboratory, because the chemicals we are exposed to need to be gotten rid of so that we can maintain a healthy and clean environment, and keep each other safe by limiting the spread of our germs... Plus, corona virus.
I'm not sure if this would help but this is what I would say I guess.
Yes it's ture hope this helps tell me if i'm i right or wrong