Lots of gases come from volcanic eruptions, including Nitrogen. Helium is the surprising one since it is made from nuclear fusion and decay.
It would help to know what nitrogen gas you're talking about. The nitrogen in Earth's atmosphere mostly came from the oxidation of ammonia, which came from the fact that nitrogen is fairly common in the universe and that hydrogen is the most common element in the universe.
Not a lot, most volcanoes have solidified on the surface so there is no open lava at the surface. It would be pouring liquid nitrogen onto rock which would not do much at all. Even if there were some lava on the surface pouring liquid nitrogen onto it would just accelerate the cooling and solidifying into rocks dependent on what type of lava it is.
nitrogen
Nitrogen
The fact that nitrogen will be added to the nitrogen deficient soil is the advantage of adding fertilizer. Nitrogen, phosphorus, and potassium are the major nutrients that plants and soils need. Commercial, conventional, standard, synthetic fertilizers also are called NPK fertilizers. The initials come from the first letters of the scientific names for precisely these three nutrients. Additionally, nitrogen is present in such organic fertilizers as compost. So whether by the inorganic or the organic route, the soil gets nitrogen when it gets a fertilizer treatment.
nitrogen
Due to volcanoes
Pyroclastic flows don't come from shield volcanoes. They come from cinder cone and sometimes composite volcanoes. Shield volcanoes only erupt runny lava.
nitrogen come from the ground when it gets in the roots
Volcanoes can produce lava, ash, and gas.
Outgassing.
The most notable gases that come out of volcanoes are sulphur dioxide, carbon dioxide and water vapour.
Volcanoes can emit lava,rocks,ash,fragments and molten rock.
Scientists study Volcanoes so, they can predict when they will erupt.
yes
shield volcanoes have cinders that come out then land on it. that's what makes them bigger than cinder cone volcanoes.
Similar but not the same, volcanoes erupt from magma and lava and rocks come out but not in a mountain