From oiling the lanes properly to knowing the right way to hit the pins for a strike. Bowling has a lot more to it than throwing the ball down the lanes.
There are different weight-types in the bowling ball, and not all balls are balanced the same. Pro Bowlers have multiple bowling balls because the lanes are not the same, not to mention the lane characteristics change over a game.
WAY MORE INFORMATION ABOUT BOWLING – in this 30 minute video