The hairs and the mucus inside the nose trap and collect dust, bugs and other debris and prevent it from entering the lungs.
it helps you breathe in the kind of way you want
By the moisture of their nose. If it's wet, then the their is healthy. If the nose is dry, then maybe not so healthy. If your furry friend has a dry nose, then they'll probably still be okay if you keep good care of them.
the nutritions in the food is what the body needs to keep it healthy
By reading Twilight!!! and exercising. and eating healthy. everything you do to keep your body healthy, will keep the system healthy.
The body can be kept healthy by healthy by good food intake and daily exercise.
how does the lungs help the other systems to keep the body healthy?
it helps you to keep healthy by ordering you to eat excersize etc
The seven signs of life help to keep the body healthy by creating movement and fluidity in life. For example, exercise and good nutrition are both signs of a healthy life which help keep the body healthy as well.
to keep it clean and healthy.
You tell me.
For remaning healthy
To have a healthy body, you need to get enough sleep, eat a healthy diet, practice good hygiene, and exercise.