The cardio-respiratory system consists of the cardio vascular system (heart and blood vessels) together with respiratory system (lungs and air ways). These systems work to transport oxygen to the muscles and organs of the body and remove waste products including carbon dioxide.
I believe it is C.
Explanation:
Eczema most often occurs in very young children. Ten percent to 20 percent of all infants have eczema, according to the National Institutes of Health.
Answer:
20 percent
Explanation:
Protein also has 4 calories per gram. In a healthy diet, about 12 to 20 percent of your total daily calories should come from protein. Your body needs protein for growth, maintenance, and energy. Protein can also be stored and is used mostly by your muscles.
