Through manufacture and use of fertilizers.
by breathing co2 back into the air. Therfore magically making it nitrogen.
Humans add nitrogen to the biosphere in the form of nitrate, a major component of plant fertilizer.
78% 0of the air we breathe is nitrogen, same as the amount in the air.
nitrogen can be found in plants and meats, but also majority of the air we breathe is made up of nitrogen.
Air/gas animals and humans breathe in, and a little bit of nitrogen is included in the air it has just breathed in.
Nitrogen starts in soil and becomes useful nitrogen for plants and it gets passed on to animals. Decomposers would eat nitrogen-rich dead organisms and some of the nitrogen goes back into the soil.
Nitrogen can enter the soil from plants such as legumes which fix nitrogen in their roots. Also dead plants and animals add nitrogen into the soil.
actually we dont mix nitrogen nor oxygen we use normal fresh air. The normal Air is 21% oxygen + 78% Nitrogen + 1% others. As humans more oxygen can be toxic for us especially underwater. However, in some cases "Like with Nitrox" we add more oxygen to make the percentage up to 40%, but this require specific training and certification.
For humans to be able to use nitrogen it must be converted from N2 (g) to ammonium (NH4^+), nitrate (NO3^-), or organic nitrogen. Nitrogen is the majority of the air we breath but it is relatively inert due to the triple bond between N atoms.
Yes. The air is 21% oxygen which is what humans run on. It is 79% nitrogen which we filter out. I learned this today in Health class.
If you just let it in, It would be 99% of ordinary air. If you send a spark through it, it would be nitrogen dioxide (it is toxic).
Nitrogen doesn't contain air, but the air contains Nitrogen.