To only engage in sexual contact when using protection (:
Explanation:
Teens can improve their bone health and reduce the risk of developing osteoporosis as they grow old by eating foods that are rich in calcium. Calcium is an important mineral that helps build strong, healthy bones as you age.
Answer: the antigens identify the foreign invader
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.
