Nitrogen also occurs in mineral deposits of nitre or saltpetre (potassium nitrate, KNO3) and Chile saltpetre (sodium nitrate, NaNO3), but these deposits exist in quantities that are wholly inadequate for human needs.
Other carbon isotopes do exist, but they exist in quantities so small that, for this example problem, they can be ignored.
Media dynasties still exist in quantity, but their long-term prospects are cloudy, and many of their firms already are seen as prime acquisition bait.
No statistically significant differences existed in quantities between WT and the bba64 mutant at all time points, except 48 h and 72 h; when there were significantly more bba64 mutant spirochetes than in WT-infected nymphs (P≤0.001) (Figure 2).
However, this does not rule out the possibility of as yet unknown longer-lived isotopes or nuclear isomers existing, some of which could, if long-lived enough, still exist in trace quantities today.
First came neptunium, in 1940, with ninety-three prothen, then plutonium, with ninety-four (whith, iturnsns out, does exist in trace quantities in nature).
Many of the most common types of ancient coins existed (and still do exist) in great quantities, saturating the market and creating very low prices for these types.
In addition, natural resources did not exist in sufficient quantities for easy exploitation, and the cultivation of land could not support the rising population.
Arguably, the fact that an obscure game with a curious backstory becomes so expensive, and is only available to an elite few, has little meaning when most of the great games people want to play exist in great quantities.
Heavy crude oils exist in large quantities in the western hemisphere, but are difficult to produce and transport because of their high viscosity.
