Fixation
When the animals breathe in nitrogen it goes into their bodies so when they die and decompose the nitrogen they breathed in is now in the soil and also when they fertilize on the land.
Most plants get nitrogen from fertilizers. Some plants can have a process called nitrogen fixing in which nitrogen from the is turned into ammonium compounds. Animals get their nitrogen from food, by eating plants and other animals.
Nitrogen fixation is the process by which bacteria remove nitrogen from the air and make it available to plants.
Nitrifying bacteria can convert atmospheric nitrogen in to nitrates that plants can use in the soil. That is why leguminous plants having these micro-organisms in the nodules enrich the soil for nitrogen deficiency.
Nitrification
Fixation
Fixation
"fixation" (usually turning into ammonia)
The reduction of nitrate to gaseous nitrogen. Most plants cannot use atmospheric(gaseous) nitrogen. It must be "fixed" by bacteria in the ground. Plants use nitrogen in the forms of ammonia(NH4+) and nitrate ions(NO3-). source: http://ohioline.osu.edu/aex-fact/0463.html
Nitrogen fixing bacteria along and on the roots of plants converts gaseous nitrogen into a form that plants can absorb.
When the animals breathe in nitrogen it goes into their bodies so when they die and decompose the nitrogen they breathed in is now in the soil and also when they fertilize on the land.
by the process of photosynthesis
Most plants get nitrogen from fertilizers. Some plants can have a process called nitrogen fixing in which nitrogen from the is turned into ammonium compounds. Animals get their nitrogen from food, by eating plants and other animals.
Nitrogen fixation is the process by which bacteria remove nitrogen from the air and make it available to plants.
Nitrifying bacteria can convert atmospheric nitrogen in to nitrates that plants can use in the soil. That is why leguminous plants having these micro-organisms in the nodules enrich the soil for nitrogen deficiency.
Nitrification
Nitrogen must be in the compound form before it is used by plants or animals