Why would i need other photo lens for my nikon d7000 if i have the 18-105mm?

Let say 35 mmm ; is not included in my 18-105 mm range? You know, i understand that out of this range probably i will need them, but why to spent more money for something that it is included in my photo lens?
By range i mean 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35mm. And so on until 105mm

A 35mm prime will have an maximum aperture of e.g. F/1.8. The kit lens doesn't even come close to that. This is important for low light and shallow DoF.

Also, a prime lens will have superior image quality.

Why get a Nikon D7000 when you can take photos with your phone? The answer is quality!
Go get a Nikon 35mm f/2 and compare the quality… It'll answer your question!

You might want an extra wide angle - 10-24mm

you might want a macro lens…

you might want a prime lens - 35mm 50mm or 85mm

learn more about photography and then you'll soon find out…

It really depends on what you want to photograph, don't forget it's not just to do with focal lengths. Lets take your example of the 35mm lens, lets compare your 18-105mm lens to a 35mm f1.8 DX.

The 35mm f1.8 is a prime lens, it gives you a very large aperture, of f/1.8 it lets more light in which means you can shoot in less well lit conditions without resorting to flash or a tripod. Also a wider aperture would be favourable for portraiture, by allowing the background to be defocused.

Then there's the fact that primes are simply easier to engineer, this means it's easier to get to a higher image quality, it's also possible to create less distortions as well as reducing chromatic abberations.

So if you have a specific need for a wide aperture or higher image quality it's almost certain the prime is going to be better. What a zoom lens brings is convenience, for a lot of photographers their work requires them to be quite quick, swapping primes about is not efficients.

Because you might want focal lengths outside that range;

10-20mm for landscapes
200mm + for sports/wildlife

because you might need the close focusing distance that a macro can give you;

because you might want a shallower depth of field than your 18-105mm is capable of (the minimum aperture is not wide enough);

because you might want to shoot in lower light than your 18-105mm is capable of (again, the minimum aperture is not that wide).

If you knew anything about photography, you'd know the answer.