Word: nitrogenous
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...even though the plants are growing more quickly, they are not as healthy, because they lack sufficient nitrogen, which is converted to plant protein...
...high carbon-to-nitrogen ratio in these plants means that they are nitrogen-deficient, because a greater amount of nitrogen is needed to sustain the larger plant...
Consequently, higher levels of carbon dioxide in the atmosphere mean that corn, which is surrounded by a denser growth of weeds, requires more herbicides. Wheat, however, which is more nitrogen-deficient and slightly less healthy, requires higher doses of fertilizer...
...arms elongate into gleaming spikes that impale people and latch onto moving cars. It can appear as a bulge in the floor, transforming itself into a humanoid that then proceeds to walk through a steel gate, its artificial skin oozing between the bars like melted butter. Frozen by liquid nitrogen, it is shattered into a thousand pieces, but its fragments congeal again into a glistening body of liquid chrome...
...people of Mexico City call it nata, or scum. It is the sickly brown cloud that stubbornly hangs over the megalopolis, home to 23 million people. Composed primarily of carbon monoxide, sulfur dioxide, nitrogen dioxide and ozone, the smog has made the winter of 1991 the most toxic in Mexico City history, triggering a 16% to 20% jump in the incidence of respiratory infections, nosebleeds and emphysema. Since September, the city has enjoyed only six days in which noxious gases did not exceed danger levels. "The atmosphere has no time to recuperate," says Homero Aridjis, president of the Group...