They could. But odds are they add an anti-rotting agent or check it daily to be safe.
According to Roller Coaster Data Base, there are currently 174 wooden roller coasters operating around the world.
No not yet but they might someday.
I believe not.
11. But, there will be one more added in the Spring of 2012 to make it a total of 12.
Some do. A wooden one usually does, but sometimes you can find some that don't. And steel roller coasters almost never do.
If you are looking for a palm sweating, fun time, the wooden roller coaster sways a lot more.
At Cypress Gardens a boy stood up on a wooden roller coaster and died
Depends on the manufacturer, speed, height and the actual ride.
All roller coasters have at least one hill and one drop. Most roller coasters also have turns as well. Inversions (going upside down) is typical on steel coasters and rare on wooden ones. Their is always some way to start a roller coaster, a chain or hydraulic launch systems are some. Brakes are on every roller coaster as well.
Wooden roller coasters give people such palm-sweating thrills because they have lots of quick swift drops and crazy turns. Of that adrenaline junkies can't get enough of. However, steel roller coasters may have the advantage of being able to be manipulated to loop and corkscrew.
The noun 'roller coaster' has no standard collective noun since most roller coasters are not in a group. However, a collective noun is an informal part of language. Any noun the fits the situation can function as a collective noun; for example, a scream of roller coasters, a maze of roller coasters, a park of roller coasters, a tour of roller coasters, etc.
Actually, you can breath on roller coasters.