Many USB webcams can be used with Mac OS X (See links below) which can be selected from the video sources listing within the software that you are using.
Find it physically or make it function?
No they do not, the built in web cam came out with the MacBook and the MacBook Pro and to a lesser extent, the iMac G5.
Most do, but the Macbook pro with Retina Display does not.
No
MacBook Pro is the best you can get
macbook pro with retina display way better
The macbook pro!
MacBook Pro!
you probably should get the MacBook. they are cheaper than the MacBook Pro. now, if you want a bigger screen, then get a MacBook Pro.
There is no age limit for getting a MacBook Pro.
No only Imovie. If you want your macbook to come installed with final cut pro then you have to order it online and pay for final cut pro separately. Then when your computer is shipped it will be shipped with a copy of final cut pro.
This most likely happens to save energy. You can change these settings on your MacBook Pro by using the Display menu in System Preferences.