Calcium - it helps with bone development
The main organ of the respiratory system is the lungs.
Answer: According to the World Health Organization (WHO), 462 million people face health problems because of under-nutrition and another 1.9 billion people face health problems because of over-nutrition.
Explanation: 462 million adults are underweight around the world according to the World Health Organization (WHO) while 1.9 billion are overweight or obese. Undernutrition, includes 4 sub-forms: wasting, stunting, underweight, and deficiencies in vitamins and minerals. Wasting is low weight-for-height, stunting is low height-for-age and underweight is low weight-for-age. Overweight or obesity is when a person is too heavy for his or her height.
