It depends on what age level. On some you play 8v8, but when you get older you play 11v11
6 to 12
No
twelve players
6 players
for professional soccer, you can have 30 players as a maximum.
US Soccer players steady at 18.2 Million
11 players
It is important because soccer players need a shitload of endurance to play
You don't need a degree. You just have to be good at soccer and be noticed by a big soccer team.
Yes, soccer players do get a wide variety of injuries.
1079 players