Free nitrogen is in the air but fixed nitrogen is in the soil.
Fixed nitrogen refers to nitrogen that has been converted into a form that can be readily used by plants, such as ammonia or nitrates. Free nitrogen, on the other hand, refers to nitrogen gas (N2) that makes up about 78% of the Earth's atmosphere and is not readily available for use by most organisms until it is fixed.
OK well free nitrogen is fixed by bacteria that live in the soil. some bacteria live in nodules, or bumps , on certain plant roots. the bacteria get food from the plants, and plants absorb fixed nitrogen from the bacteria. animals get nitrogen by eating plants or by eating prey that have eaten plants. fixed nitrogen may enter the soil in other ways too. a small amount of free nitrogen in the air by lighting. it is carried to the ground by rainfall. fixed nitrogen also enters the soil because of decomposers. decomposers break down dead organisms, and fixed nitrogen is released in the soil. the fixed nitrogen can be absorbed by plant roots.
All life forms need nitrogen to grow. Animals can get it from eating plants. But plants must get it from the soil. Fixed nitrogen (in the forms of nitrate ions - NO3-) is the only type of nitrogen that can be found in the soil.Note that nitrogen (as a gas - N2) makes up most of the air. Most plants can not use it because the molecules are triple-bonded.
It is called nitrogen fixing.
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Fixed nitrogen refers to nitrogen that has been converted into a form that can be readily used by plants, such as ammonia or nitrates. Free nitrogen, on the other hand, refers to nitrogen gas (N2) that makes up about 78% of the Earth's atmosphere and is not readily available for use by most organisms until it is fixed.
OK well free nitrogen is fixed by bacteria that live in the soil. some bacteria live in nodules, or bumps , on certain plant roots. the bacteria get food from the plants, and plants absorb fixed nitrogen from the bacteria. animals get nitrogen by eating plants or by eating prey that have eaten plants. fixed nitrogen may enter the soil in other ways too. a small amount of free nitrogen in the air by lighting. it is carried to the ground by rainfall. fixed nitrogen also enters the soil because of decomposers. decomposers break down dead organisms, and fixed nitrogen is released in the soil. the fixed nitrogen can be absorbed by plant roots.
All life forms need nitrogen to grow. Animals can get it from eating plants. But plants must get it from the soil. Fixed nitrogen (in the forms of nitrate ions - NO3-) is the only type of nitrogen that can be found in the soil.Note that nitrogen (as a gas - N2) makes up most of the air. Most plants can not use it because the molecules are triple-bonded.
Free nitrogen means chemically free, it has not combined with any other elements. Fixed nitrogen has combined to make ammonium compounds or nitrate compounds which can be easily absorbed by plants and used to make amino acids in the plant cells.
nonvolatile,as a vegetable oil, incorporated into a stable compound from its free state, as atmospheric nitrogen, OR permanently held, as a fabric dye
Nitrogen fixation is the process by which certain bacteria convert atmospheric nitrogen into a usable form for plants, such as ammonium or nitrate. This can occur through the activity of symbiotic relationships with leguminous plants, free-living soil bacteria, or industrial processes.
difference between interest and interest free financing
You can change free will
There is no difference.
in pin joint the linkages are free to move relative to one another angularly, whereas in hinge joint, one linkage is fixed and the other is free to move in angular direction.
a free axle is both tires are independent. one could be in the hole, and the car is still stable. this is what is used today and is the best kind of axle to have. fixed axles are both wheels are slanted at the same time, so the car will slant with the hole. these can be found on older trucks.
Nitrogen fixation in nature occurs through biological processes by symbiotic bacteria in plant roots, free-living soil bacteria, and certain types of blue-green algae in water bodies. Additionally, nitrogen can also be fixed through non-biological processes like lightning and industrial processes.