Antimony exists as two stable isotopes, < sup > 121 </ sup > Sb with a natural abundance of 57. 36 % and < sup > 123 </ sup > Sb with a natural abundance of 42. 64 %.

In addition to this, the land the Ainu lived on was distributed to the Wajin who had decided to move to Hokkaido, who had been encouraged by the Japanese government of the Meiji era to take advantage of the island ’ s abundance of natural resources, and to create and maintain farms in the model of western industrial agriculture.

Nevertheless, Cuba's vast size and abundance of natural resources made it an ideal place for becoming a booming sugar producer.

Naturally occurring chromium is composed of three stable isotopes ; < sup > 52 </ sup > Cr, < sup > 53 </ sup > Cr and < sup > 54 </ sup > Cr with < sup > 52 </ sup > Cr being the most abundant ( 83. 789 % natural abundance ).

Naturally occurring europium is composed of 2 isotopes, < sup > 151 </ sup > Eu and < sup > 153 </ sup > Eu, with < sup > 153 </ sup > Eu being the most abundant ( 52. 2 % natural abundance ).

Naturally occurring erbium is composed of 6 stable isotopes,,,,,, and with being the most abundant ( 33. 503 % natural abundance ).

Naturally occurring gadolinium is composed of 6 stable isotopes, < sup > 154 </ sup > Gd, < sup > 155 </ sup > Gd, < sup > 156 </ sup > Gd, < sup > 157 </ sup > Gd, < sup > 158 </ sup > Gd and < sup > 160 </ sup > Gd, and 1 radioisotope, < sup > 152 </ sup > Gd, with < sup > 158 </ sup > Gd being the most abundant ( 24. 84 % natural abundance ).

Naturally occurring lanthanum is composed of one stable (< sup > 139 </ sup > La ) and one radioactive (< sup > 138 </ sup > La ) isotope, with the stable isotope, < sup > 139 </ sup > La, being the most abundant ( 99. 91 % natural abundance ).

The abundance of some genetic changes within the gene pool can be reduced by natural selection, while other " more favorable " mutations may accumulate and result in adaptive changes.

< sup > 21 </ sup > Ne and < sup > 22 </ sup > Ne are partly primordial and partly nucleogenic ( i. e., made by nuclear reactions of other nuclides with neutrons or other particles in the environment ) and their variations in natural abundance are well understood.

Naturally occurring nickel is composed of 5 stable isotopes ; < sup > 58 </ sup > Ni, < sup > 60 </ sup > Ni, < sup > 61 </ sup > Ni, < sup > 62 </ sup > Ni and < sup > 64 </ sup > Ni with < sup > 58 </ sup > Ni being the most abundant ( 68. 077 % natural abundance ).

Naturally occurring neodymium is a mixture of five stable isotopes, < sup > 142 </ sup > Nd, < sup > 143 </ sup > Nd, < sup > 145 </ sup > Nd, < sup > 146 </ sup > Nd and < sup > 148 </ sup > Nd, with < sup > 142 </ sup > Nd being the most abundant ( 27. 2 % of the natural abundance ), and two radioisotopes, < sup > 144 </ sup > Nd and < sup > 150 </ sup > Nd.

Although " resource curse " is more widely understood to mean an abundance of natural resources which fuels official corruption resulting in a violent competition for the resource by the citizens of the nation.

By using the solar system's average xenon content as the natural abundance, the excess of < sup > 129 </ sup > Xe to the abundance of < sup > 129 </ sup > I ratio can be derived.

The dating is simply a question of finding the deviation from the natural abundance of < sup > 26 </ sup > Mg ( the product of < sup > 26 </ sup > Al decay ) in comparison with the ratio of the stable isotopes < sup > 27 </ sup > Al /< sup > 24 </ sup > Mg.

With an abundance of natural light the building is used to house displays of photographs and small, educational exhibitions.

Naturally occurring silicon is composed of three stable isotopes, silicon-28, silicon-29, and silicon-30, with silicon-28 being the most abundant ( 92 % natural abundance ).

Naturally occurring silver is composed of two stable isotopes, < sup > 107 </ sup > Ag and < sup > 109 </ sup > Ag, with < sup > 107 </ sup > Ag being slightly more abundant ( 51. 839 % natural abundance ).

Sichuan is colloquially known as the " heavenly country " due to its abundance of food and natural resources.

Atomic mass for natural life is based on weighted average abundance of natural isotopes that occur in the Earth's crust and atmosphere.

Almost all other elements found in nature, including some further hydrogen and helium created since then, were made by various natural or ( at times ) artificial methods of nucleosynthesis.

Fuel cells can be used to extract power either from natural fuels or from synthesized fuels ( mainly electrolytic hydrogen ) and so can be viewed as either generation systems or storage systems depending on their use.

Industrial production is mainly from the steam reforming of natural gas, and less often from more energy-intensive hydrogen production methods like the electrolysis of water.

The average atomic mass of natural hydrogen is 1. 00794 u and that of natural oxygen is 15. 9994 u ;

Non-hydrocarbons such as carbon dioxide, nitrogen, helium ( rarely ), and hydrogen sulfide must also be removed before the natural gas can be transported.

Various chemical processes can convert the carbon and hydrogen in coal, natural gas, plant and animal biomass, and organic wastes into short hydrocarbons suitable as replacements for existing hydrocarbon fuels.

)</ ref >< ref name = Lackner2012 > Such carbon neutral and negative fuels can be produced by the electrolysis of water to make hydrogen used in the Sabatier reaction to produce methane which may then be stored to be burned later in power plants as synthetic natural gas, transported by pipeline, truck, or tanker ship, or be used in gas to liquids processes such as the Fischer – Tropsch process to make traditional transportation or heating fuels .< ref name = Pearson2012 > ( Review.

Other options include recourse to peaking power plants, methane storage ( excess renewable electricity to hydrogen via electrolysis, combine with CO2 ( low to neutral CO2 system ) to produce methane ( synthetic natural gas sabatier process ) with stockage in the natural gas network )

In the natural world, synergistic phenomena are ubiquitous, ranging from physics ( for example, the different combinations of quarks that produce protons and neutrons ) to chemistry ( a popular example is water, a compound of hydrogen and oxygen ), to the cooperative interactions among the genes in genomes, the division of labor in bacterial colonies, the synergies of scale in multi-cellular organisms, as well as the many different kinds of synergies produced by socially-organized groups, from honeybee colonies to wolf packs and human societies.

Today, sulfur is produced from petroleum, natural gas, and related fossil resources, from which it is obtained mainly as hydrogen sulfide.

The resulting hydrogen sulfide from this process, and also as it occurs in natural gas, is converted into elemental sulfur by the Claus process.

Nitrogen fertilizers are often made using the Haber-Bosch process ( invented about 1915 ) which uses natural gas ( CH < sub > 4 +)</ sub > for the hydrogen and nitrogen gas ( N < sub > 2 </ sub >) from the air at an elevated temperature and pressure in the presence of a catalyst to form ammonia ( NH < sub > 3 </ sub >) as the end product.

Possible artificial fuels include radioactive isotopes, wood alcohol, grain alcohol, methane, synthetic gas, hydrogen gas ( H < sub > 2 </ sub >), cryogenic gas, and liquefied natural gas ( LNG ).

# Industrial N-fixation: Under great pressure, at a temperature of 600 C, and with the use of an iron catalyst, hydrogen ( usually derived from natural gas or petroleum ) and atmospheric nitrogen can be combined to form ammonia ( NH < sub > 3 </ sub >) in the Haber-Bosch process which is used to make fertilizer and explosives.

The higher combustion temperature of hydrogen produces more NO < sub > x </ sub > than natural gas combustion.

The methanol economy is an alternative to the hydrogen economy, compared to today's hydrogen production from natural gas.

In 2012, however, Chu stated that he sees fuel cell cars as more economically feasible as natural gas prices have fallen and hydrogen reforming technologies have improved.

Commonly, the natural oils are hydrogenated by passing hydrogen through the oil in the presence of a nickel catalyst, under controlled conditions.

Examples of production methods include steam reforming of natural gas or liquid hydrocarbons to produce hydrogen, the gasification of coal, biomass, and in some types of waste-to-energy gasification facilities.

Syngas consists primarily of hydrogen, carbon monoxide, and very often some carbon dioxide, and has less than half the energy density of natural gas.

When used as an intermediate in the large-scale, industrial synthesis of hydrogen ( principally used in the production of ammonia ), it is also produced from natural gas ( via the steam reforming reaction ) as follows: