I believe the correct answer would be "different systems".
Hope it helps!
A, because if you know about hygiene, you can help prevent the flu. Ex: educating younger kids to always wash your hands after touching anything dirty, after using the restroom, and before eating.
Total servings of grapefruit it would take to provide most of the daily requirements of Vitamin C is: <span>3 servings
One serving of grapefruit provide around 31 mg of vitamin C.
If the required daily intake is 75 mg, eating 3 serving of grapefruits (which will give you around 93 mg of vitamin C) is enough to fulfill the daily requirement.</span>
<h2>O facial expressions</h2><h3>When you cry, you show emotions through your face. you are crying, and you're sad. Facial expressions show motions of the face that indicate feelings and emotions. So, the answer is facial expression.</h3>
