Body composition describes the amount of fat, bone, water, and muscle in the body. Measuring your body composition will tell you your own body's unique makeup and help you identify areas to work on to improve your overall health and wellness.
I haven't read the book,
Apologies
1. A pronoun which points out a particular person, place, or thing - demonstrative pronoun
2. A pronoun that relates an adjective clause to the word it modifies - relative pronoun
3. A pronoun used when asking questions - interrogative pronoun
Percy has to escape from Hade's kingdom, Percy came to Hades because Hades had imprisoned Percy's mother, and Hades wanted to keep Percy, and Percy has only three pearls and he also had two friends with him so he decides that he'd leave his mother because if he stayed and his mother go she'd never forgive him.