Gives the body its shape.
Calcium is a nutrient that can help structure your skeletal system and keep your bones healthy.
i think because they want the skeletal system to stay alive
they are all alike because they all help keep your body healthy and they all are systems in your body that helps your body.
Inside your bones is marrow. Bone marrow helps keep the body healthy because it contains white blood cells. White blood cells are used in your body to ward off infection.
By reading Twilight!!! and exercising. and eating healthy. everything you do to keep your body healthy, will keep the system healthy.
exercise, nutrients, and rest
you are noobs
To keep support the organs within the body
byron
eat right\
byron
it helps regulate the body's temperature