Why is it important to place the heel of the hand one fingers width above the substernal notch before giving chest compressions?

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

The 1.5 mile run test and the 12 minute swim test are considered as what kind of test ?

Which of the following contains the most calories/gram?