Sentences with phrase «atmospheric nitrogen»

For example, controlling fossil - fuel combustion could reduce atmospheric nitrogen deposition on both land and sea.

The ability to use atmospheric nitrogen to support more widespread life was thought to have appeared roughly 2 billion years ago.

Most ammonia is produced by heating natural gas or coal as a source of hydrogen, then forcing it to react with atmospheric nitrogen.

An electrical charge — from lightning or a man - made source such as an electrical generator — splits atmospheric nitrogen and oxygen molecules into separate atoms.

His design was the first economically viable method to harness atmospheric nitrogen and thus manufacture fertilizer.

Microbes can also generate nitrogen by taking carbon and using it fix atmospheric nitrogen into ammonia.

Since the soybean is a legume, fixing atmospheric nitrogen in the soil, it is not as fertilizer - responsive as, say, corn, which has a ravenous appetite for nitrogen.

On Earth, fixed nitrogen comes from atmospheric nitrogen primarily with the help of enzymes (or industrial processes).

Bacteria inside the legumes» roots convert atmospheric nitrogen into a form plants can use, fertilizing the fields.

The effects of atmospheric nitrogen deposition in the Rocky Mountains of Colorado and southern Wyoming, USA — a critical review.

Thus, past and future increases in atmospheric nitrogen deposition have the potential to alter the base of the marine food web; and, in the long term, the structure of the ecosystem.

As shown in previous studies, the litter from the polluted site, which had endured high levels of atmospheric nitrogen oxides and ozone, had higher nitrogen content than litter from the clean site.

In addition, increasing atmospheric nitrogen pollution can allow rapidly decomposing vascular plants to outcompete the more recalcitrant Sphagnum (peat moss).

This anthropogenic addition of nitrogen has reached a magnitude comparable to about half of global ocean nitrogen fixation (the natural process by which atmospheric nitrogen gas becomes a useful nutrient for organisms).

Pulse crops are in the legume family, Fabaceae, and consist of plants that fix (absorb) atmospheric nitrogen through roots in the soil, are high in protein, and bear seeds in pods.

Soil bacteria carry out similar reactions, turning atmospheric nitrogen into forms that are usable by plants.

By Sam Lemonick / c & en January 3, 2018 Computer simulations predict a new light - activated catalyst could make the Haber - Bosch process obsolete The world relies on the Haber - Bosch process to reduce atmospheric nitrogen to ammonia to -LSB-...]

Although the U.S. could tighten existing clean air rules to combat atmospheric nitrogen emissions, the nation has neither comprehensive laws nor adequate monitoring devices for such emissions by livestock and farms.

This initiated a feedback loop that caused the rhizobia to start fixing more atmospheric nitrogen, which the plant then used to produce more seeds.

One major benefit of growing legumes such as chickpeas, common beans, peas and soybeans is that they not only can use atmospheric nitrogen for their own growth but also leave residual nitrogen in the soil for subsequent crops.

Although atmospheric nitrogen abounds, few living creatures are capable of utilizing this nitrogen.

The analysis focused on the genes involved in nitrogen fixation and the formation of heterocysts, which are special cells where atmospheric nitrogen is converted into ammonia.

Human activity increases the amount of nitrogen that reaches the oceans by 50 %, on top of natural processes, according to a new report which assesses the magnitude and impacts of anthropogenic atmospheric nitrogen inputs to the ocean.

Many blue - green algae responsible for algal blooms can fix atmospheric nitrogen dissolved in the water, and therefore water stewards should focus their efforts on removing phosphorus from lakes to combat algal blooms.

If paramagnetic oxygen migrates, then the global atmospheric nitrogen / oxygen ratio will not retain the familiar well - mixed 78/21 percentages.

Others, such as nitrogen - fixing legumes, benefit from symbiotic relationships with rhizobia that create ammonia from atmospheric nitrogen.

In contrast, after more than 30 years of trying to create corn that can convert atmospheric nitrogen into usable ammonia instead of relying on fertilizers, Ursin says she is still far from finding a way.

Some convert atmospheric nitrogen into bioavailable forms that are then exchanged for carbon from the plant.

Manmade production of ammonia and nitrate fertilizers has exploded in recent decades and now vastly exceeds the amount of atmospheric nitrogen converted into reactive nitrogen by microbial organisms around the world.

Humanity currently depends on atmospheric nitrogen to produce enough fertilizer to maintain world food supply.

Biological nitrogen fixation — where diazotrophic bacteria fix atmospheric nitrogen and convert it to ammonium — provides a free way for plants to alter and absorb the nutrient.

Given the likelihood that the magnitude of atmospheric nitrogen deposition will continue to increase in the future, the North Pacific Ocean could rapidly switch to having surplus nitrate.

A team of scientists using a state - of - the - art UCLA instrument reports the discovery of a planetary - scale «tug - of - war» of life, deep Earth and the upper atmosphere that is expressed in atmospheric nitrogen.

For instance, «nitrogen - fixing legumes such as soybeans and alfalfa in crop rotations fix atmospheric nitrogen into the soil through root nodules.

Bacteria near the surface help shuttle nitrogen into the ocean food chain by converting or «fixing» atmospheric nitrogen into forms that phytoplankton can use.

«This will eventually lead to a greater prevalence of blue - green algae called cyanobacteria which fix atmospheric nitrogen,» he added.

Scientists have discovered a planetary - scale tug - of - war between life, deep Earth and the upper atmosphere that is expressed in atmospheric nitrogen.

Mosses in subarctic tundra are colonized by bacteria that fix atmospheric nitrogen (N2), and together, they can contribute 50 % to total ecosystem N input.

Scientists at Kansas State University hoped to better tease out the delicate relationship between burning, grazing, and a new threat to prairies worldwide: atmospheric nitrogen from car tailpipes and fertilizers, which helps some species flourish at the expense of others.

This industrial process converts atmospheric nitrogen (N2) to ammonia through a reaction with hydrogen.

There's also interest in using metal catalysts to convert carbon dioxide into fuels, make fertilizers from atmospheric nitrogen and drive reactions in fuel - cell cars.

Some cover crops, such as fava beans, «fix» atmospheric nitrogen.

The gamma rays emitted in lightning have enough energy to knock a neutron out of atmospheric nitrogen, and it was the reabsorption of this neutron by particles in the atmosphere that produced the gamma - ray afterglow.

That is partly explained by the cyanobacteria, which convert atmospheric nitrogen to the nitrate building blocks essential for plant growth and the overall food chain.

However, Pluto's small mass allows hundreds of tons of atmospheric nitrogen to escape into space each hour.

Their assessment revealed a consistent picture of increasing nitrate concentrations, the magnitude and pattern of which can only be explained by the observed increase in atmospheric nitrogen deposition.