Answer: elevation, index, contour interval
Explanation:
We need blood because it carries oxygen and helps us sustain life. The organ that pushes blood through the body is the heart.
Answer:
Macro: Phosphorous, Protein, Fat, Carbohydrates
Micro: Vitamin A, Sodium
Explanation:
Macronutrients are nutrients that are needed in large amounts. Micronutrients are needed in smaller amounts.