She likes the word contagious because many good things are contagious like laughter and passion and <span>inspiration. Also the word shows that one good idea can become contagious and change the world SOURCE ANSWER KEY :))</span>
Your body uses protein to build and repair tissues. You also use protein to make enzymes, hormones, and other body chemicals. Protein is an important building block of bones, muscles, cartilage, skin, and blood.
