Answer:
Explanation:
Food sources of vitamins include plants and animals. Vitamins are only found in living things; however, there is not one food source that can provide all the vitamins needed for growth and development of a healthy body. A variety of foods, therefore, must be eaten. For example, potatoes are a good source of Vitamin C, but they are not a good source of Vitamin D. Restricting a diet to foods that are limited in their vitamin content or variety can lead to deficiencies. Because vitamins are essential to the body's utilization of energy, deficiencies can cause a wide range of health problems, ranging from brittle fingernails to heart failure. The seriousness of the effects is due mostly to the length of time that a person has had a deficiency. Cells can function for a period of time without the needed vitamins. Cases of life-threatening deficiencies are rare in nations such as the United States because of the abundance of food sources available to people of all economic levels.
I think it’s A (students often walked or rode bikes to school).
The nervous system, Skeletal system, Muscular system and the Digestive system
B. Protective Factors
I would say that the answer is B because when your life is in risk, you need someone with you to stay and make sure everything is okay.
1) Recognize the signs of danger.
2)Calm things down.
3) Don’t leave the situation.
4) Offer alternatives.
