Yes but it will void the warranty.
Kill it.
Yes easily if it is the same type of LCD screen.
You can purchase a PSP screen online and then replace it.
i dont think so because i have one
For scales it is easest to replace the screen.
If the black marks are dead pixels then you have to replace the screen you cant fix it.
No, if the screen is broken for any reason, you will need to purchase a new game boy completely.
http://www.instructables.com/id/Replace-the-top-screen-of-a-Nintendo-DS-without-o/
A good computer shop should be able to replace broken parts to fix this.
You have two choices... either replace the screen - or - replace the phone... whichever is cheapest.
An iPad screen protector can really be a good thing for you to have, but it may be more dangerous than helpful if it is broken. A cracked protector can bend down and scratch the screen when pressure is applied to it. This could happen if it is in your bag, for instance, with your books. As soon as it breaks, you need to replace it to prevent any further damage to your iPad.
There are no known ways to repair an Ipod battery. You can have the screen repaired or replaced, but the only option you have for a broken battery is to replace it.