Developed from the 1950s through the 1970s, plate tectonics is the modern version of continental drift, a theory first proposed by scientist Alfred Wegener in 1912. Wegener didn't have an explanation for how continents could move around the planet, but researchers do now. Plate tectonics is the unifying theory of geology, said Nicholas van der Elst, a seismologist at Columbia University's Lamont-Doherty Earth Observatory in Palisades, New York.
What is cyanide poisoning? Cyanide poisoning is a condition that develops when you inhale, touch, or swallow cyanide. Cyanide is a poisonous chemical gas that prevents your body from absorbing oxygen. The lack of oxygen can damage your organs and be life-threatening. Factories that make plastics, paper, jewelry, or textiles.
The main symptoms of acute poisoning by cyanides are due to the interference of cyanide in the assimilation and distribution of oxygen in the body. Whether the cyanide source is HCN or ingestion of food containing a water soluble cyanide such as potassium or sodium salt, the poisoning mechanism is the same.The cyanide ions react irreversibly with the iron, in particular with the iron in the cytochrome c oxidase and hemoglobin.hether the cyanide source is HCN or ingestion of food containing a water soluble cyanide such as potassium or sodium salt, the poisoning mechanism is the same. The cyanide ions react irreversibly with the iron, in particular with the iron in the cytochrome c oxidase and hemoglobin.