Answer:
The respiratory system provides oxygen to the body's cells while removing carbon dioxide, a waste product that can be lethal if allowed to accumulate. There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration.
Explanation:
I think a parent's would communicate better with there kids as friends. because friends talk better with other friends because they are more open. As for kids and parent's they don't get along very well sometimes because the kid thinks the parent's are to bossy or whatever..etc.
Hope this helps
Answer:
some of the most essencial vitamins are A, C, D, E, K, and the B vitamins: thiamin (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxal (B6), cobalamin (B12), biotin, and folate/folic acid. some of the most essencial vitamins are calcium, chloride, magnesium, phosphorus, potassium, sodium, and sulfur.