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

Sushi or chicken tender with barbecue sauce? which is your favorite? which is better for your health?

In at least 150 words, discuss the meaning of the title, "two kinds". explain the relationship between the title and the theme of the story

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.