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Nitrogen-fixing bacteria help cycle nitrogen through the ecosystems in a variety of ways. With plants, the nitrogen-fixing bacteria help ensure that nitrogen is cycled back into the soil.
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Humans impact the nitrogen cycle by using fertilizer and chemical additives in the soil creating an increase in nitrogen as well as by burning fossil fuels which creates a dramatic increase in nitrogen.
The disposing of sewage into water is one way humans interfere with the nitrogen cycle. Humans are also responsible for releasing large amounts of NOx gasses into the atmosphere, which interferes with the nitrogen cycle as well.
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.
Humans impact the nitrogen cycle by making fertilizers and burning fossil fuels, which alter the amount of fixed nitrogen our ecosystems.
Plants get it from bacteria which live associated with their roots who take atmospheric nitrogen and fixate it (nitrogen cycle). Animals can only get it by ingesting organic compounds which contain nitrogen, such as plants and other animals which have eaten plants.
Nitrogen-fixing bacteria help cycle nitrogen through the ecosystems in a variety of ways. With plants, the nitrogen-fixing bacteria help ensure that nitrogen is cycled back into the soil.
when nitrogen go from soil to back in atmosphere due to nitrogen fixing bacteria then it again return to soil due to lightning, dead animals, roots of plants and by other ways. and again go to atmosphere in this way nitrogen cycled.
Actually nitrogen exist in the atmosphere in dinitrogen (N2) form and cannot be utilized directly. As such bacteria help in converting atmospheric nitrogen into ammonia which then can be used by the plants.
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.
Deforestation disrupts the nitrogen cycle by reducing the number of trees that take in nitrogen from the atmosphere and incorporate it into their biomass. As a result, there is less nitrogen available for other plants in the ecosystem, leading to decreased plant growth and nutrient depletion. Additionally, deforestation increases soil erosion, which can lead to the loss of nitrogen-rich topsoil and further disrupt the nitrogen cycle.
by Bacteria.
by Bacteria.
Some essential nitrogen compounds can be absorbed by plants from the soil in which they grow. the nitrogen compounds can be provided to the soil by nitrogen-fixing bacteria living in association with the plants and/or from fertilizers. Some nitrogen compounds can also be input to the soil from lightning strikes that provide activation energy to facilitate the reaction of atmospheric nitrogen to produce absorbable nitrogen compounds that can be carried into soil by rain.
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by Bacteria.