What chemicals are essential to all cellular activity

Sam is a four-year-old child. as compared to other boys of his age, his skin looks dull. his hair appears damaged and dry. which nutrient is sam’s body likely lacking? a. proteins b. carbohydrates c. fats d. minerals

When it comes to our health and the treatment of diseases, technology has had a effect. a. very negative b. neutral c. positive d. negative

Is the smallest biological structural units of the body