The overall process is called nitrogen fixation.

It is the spectrum of a planet like Earth, showing a presence of nitrogen dioxide, as a clear signal of life, and oxygen and ozone.

The atmosphere mostly consists of nitrogen and oxygen.

The air mainly consists of oxygen and nitrogen.

Air is mainly composed of nitrogen and oxygen.

Too much nitrogen is just as harmful as too little.

The air we breathe consists of oxygen and nitrogen.

The largest, Triton, is geologically active, with geysers of liquid nitrogen.

Significant amounts of nitrogen and carbon may have been present in the form of carbon monoxide (CO) and molecular nitrogen (N2) instead of ammonia and methane.

We're all breathing air right now. Air is a mixture of oxygen and nitrogen, about 20 percent oxygen. About 80 percent nitrogen is in our lungs.

Mars has a very thin atmosphere made of carbon dioxide, nitrogen, and argon.

And if we see the nitrogen dioxide I think we have the perfect E.T.

But the nitrogen oxides that diesel engines emit are considered carcinogens, and can cause asthma.

Likewise, more nitrogen fertilizer is applied in agriculture than is fixed naturally in all terrestrial ecosystems, and nitric oxide production from the burning of fossil fuels and biomass also surpasses natural emissions.

You need the bacteria to fix nitrogen, and without those microorganisms, you won't have any performance at all.

Reductions of other greenhouse gases, such as nitric oxide, are attainable through clever combustor design.

It was initially assumed that the alkaloids are the final products of nitrogen metabolism in plants, as urea in mammals.

Nitric oxide is then released from the macrophage and, because of its toxicity, kills microbes near the macrophage.

While there is little or no water on Venus, there is a phenomenon which is quite similar to snow.

Nitrogen(I) and bismuth(I) are known but rare and ununpentium(I) is likely to show some unique properties, probably behaving more like thallium(I) than bismuth(I).

About 99 of a mammal's mass is made up of the elements carbon, nitrogen, calcium, sodium, chlorine, potassium, hydrogen, phosphorus, oxygen and sulfur.

The relative lack of nitrogen ice suggests that its supply of nitrogen has somehow been depleted over the age of the Solar System.

The drug, BiDil, is designed to treat or prevent congestive heart failure by raising low or depleted levels of nitric oxide in the blood. It was originally designed for a wide population base, and race was irrelevant.

Reserves of minerals like phosphate will remain plentiful in the next decades, and nitrogen is not limited.

The drug, BiDil, is designed to treat or prevent congestive heart failure by raising low or depleted levels of nitric oxide in the blood.

Organic compounds (proteins, lipids and carbohydrates) contain the majority of the carbon and nitrogen most of the oxygen and hydrogen is present as water.

Significant amounts of nitrogen and carbon may have been present in the form of carbon monoxide and N2 instead of ammonia and methane.

Approximately 10 may be used with a slow freeze method, and the cells may be frozen at or stored in liquid nitrogen safely.

Several gases, including carbon dioxide, methane, and nitrous oxide, warm the planet as their concentrations in the atmosphere increase.

By interfering with the carbon, nitrogen, water, and phosphorus cycles, human activity changes the atmosphere, oceans, waterways, forests, and ice sheets, and diminishes biodiversity.

The nitrogen just sort of floats around in our blood and tissues, and that's all fine, that's how we're designed.

Although atmospheric nitrogen abounds (more than 75 ), few living creatures are capable of using this atmospheric nitrogen in its diatomic form, N2 gas.

If you don t think this work important, consider that half the nitrogen in your body is synthetic, a product of a Haber Bosch factory.

Six elements appear in this table, namely hydrogen, oxygen, nitrogen, carbon, sulfur, and phosphorus, with the atom of hydrogen conventionally assumed to weigh 1.

When proline is bound as an amide in a peptide bond, its nitrogen is not bound to any hydrogen, meaning it cannot act as a hydrogen bond donor, but can be a hydrogen bond acceptor.

Jupiter's atmosphere is thought to be composed of hydrogen, helium, sulfur, and nitrogen. Clouds in the atmosphere move in alternating bands from east to west or west to east.

The amount of nitrogen and sulfur circulating through the Earth system has doubled. The ocean s pH is changing at an unprecedented rate, reaching levels of acidity that marine organisms have not experienced in the last 20 million years.

Burnt by outdated heating boilers, the low quality coal produces high emission levels of sulfur dioxide, nitrogen oxide, and other particulate pollutants that are main culprits in fatal smoke.

The targets apply to the four greenhouse gases carbon dioxide (), methane (), nitrous oxide (), sulphur hexafluoride (), and two groups of gases, hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs).

Dry air from Earth's atmosphere contains 78.08 nitrogen, 20.95 oxygen, 0.93 argon, 0.038 carbon dioxide, and traces of hydrogen, helium, and other noble gases (by volume), but generally a variable amount of water vapour is also present, on average about 1 at sea level.

肥料的使用在近几年中效率猛增 这一趋势还将持续下去 磷酸盐等物质的储备足够使用几十年 氮更是取之不尽 从废料中提取营养素的技术已经发明 从而降低了对采矿的依赖 此外 猪和家禽是理想的食物废料处理者 它们的排泄物也可以作为养料和能量源 将未来食物链融入生产大循环

Many types of natural capital, however, have not been included fresh water, soil, forests as providers of ecosystem services, and the atmosphere as a sink for such pollution as particulates and nitrogen and sulphur oxides.

2 NaN3 2 Na NO2 2 H 3 N2 2 NO 2 Na 2 H2OAbove 330 C sodium nitrite decomposes (in air) to sodium oxide, nitrogen(II) oxide and nitrogen dioxide.

What's a drug? A drug is made up of a small molecule of hydrogen, carbon, oxygen, nitrogen, and a few other atoms all cobbled together in a shape, and it's those shapes that determine whether, in fact, that particular drug is going to hit its target.

Indeed, beef production requires, on average, 28 times more land and 11 times more water than the other livestock categories, while producing five times more greenhouse gas emissions and six times more reactive nitrogen.