It depends on the country that you live in. In the USA their is no age limit to use an Airgun. However in most states you must be 18 to purchase one.
in the UK you have to be with an adult until your 14
Yes.
to many deaths from the use of them
That depends on your parents and local law enforcement.
Yes it does and it will eventually destroy the seals. Never use and oil on an airgun always use Crosman Pellgun or RWS oil they are designed for airgun seals.
No: usually you must be over 18.
It's up to your parent's, but you must be 18 to purchase one.
Only if the airgun has a scope rail designed into the gun. You will also need an airgun scope not a firearms scope.
You can't it's not designed to be a repeater.
The highest velocity of an airgun is that of Evanix AR6 pistol which is 1000 fps.
If you mean to purchase Airgun's and airgun accessories, I think Airgun depot has great prices and fast shipping. Pyramid Air is very good as well I hear.
depends on where rats are. If in your house i recommend old school spring traps. if in shed i recommend getting airgun
The address of the Daisy Airgun Museum is: 202 W Walnut St, Rogers, AR 72756