1. Classification
1.1. The most interesting sports are played with a ball.
1.1.1. Sports played with a ball.
1.1.1.1. Basketball
1.1.1.1.1. two teams of 5 players.
1.1.1.1.2. Has a captain
1.1.1.2. Football
1.1.1.2.1. Two teams of 11 players
1.1.1.2.2. Has a captain
1.1.1.3. Baseball
1.1.1.3.1. Two teams of 9 players
1.1.1.3.2. Has a captain
1.1.2. no ball needed.
1.1.2.1. Sincronized swimming
1.1.3. The best sports are played with a ball.
2. Example
2.1. I think is good for teenagers to study abroad.
2.1.1. Teenagers learn different cultures while studyng abroad.
2.1.1.1. Teenagers meet people from other countries.
2.1.1.1.1. While studyng abroad you may have roomies
2.1.1.2. Teenagers learn new languages.
2.1.1.2.1. While coexisting with poeple form other countries they may teach you their natal language.
2.1.1.3. Teenagers learn to manage their own money.
2.1.1.3.1. Since you dont live with your parents your parents send you money.
3. Compare and Contrast
3.1. Iphone vs Blackberry
3.1.1. Most people have a smartphone and constantly looks for the best one.
3.1.1.1. Iphone
3.1.1.1.1. Color
3.1.1.1.2. Internet connection
3.1.1.1.3. Price
3.1.1.2. Blackberry
3.1.1.2.1. Color
3.1.1.2.2. Internet connection
3.1.1.2.3. Price
3.1.2. Both smartphones are good, it depends the function you want it to give.