Question

1. some of the most common contaminants in the food supply include all of the following except: calcium arsenic dioxin lead 4. the nutrients that do not need to be digested before being absorbed are: carbohydrate, vitamins, minerals protein, water, fat water, vitamins, minerals carbohydrate, fat, protein

Explanation:

For question 3, arsenic, dioxin, and lead are common food - contaminants, while calcium is a nutrient. For question 4, water, vitamins, and minerals are small - molecule nutrients that can be directly absorbed without digestion, while carbohydrates, proteins, and fats need to be broken down into smaller molecules first.

Answer:

1. Calcium
2. Water, vitamins, minerals