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Photosynthetic prokaryotic organisms that produced O 2 as a byproduct lived long before the first build-up of free oxygen in the atmosphere, [5] perhaps as early as 3.5 billion years ago. The oxygen cyanobacteria produced would have been rapidly removed from the oceans by weathering of reducing minerals, [citation needed] most notably ferrous ...
As of 2020, the last person to be executed in the gas chamber was German national Walter LaGrand, sentenced to death before 1992, who was executed in Arizona on March 3, 1999. The U.S. Court of Appeals for the Ninth Circuit had ruled that he could not be executed by gas chamber, but the decision was overturned by the United States Supreme Court ...
Oxygen, O 2, meanwhile, was present in the atmosphere at just 0.001% of its present atmospheric level. [11] [12] The Sun shone at about 70% of its current brightness 4 billion years ago, but there is strong evidence that liquid water existed on Earth at the time. A warm Earth, in spite of a faint Sun, is known as the faint young Sun paradox. [13]
The Alabama attorney general's office told federal appeals court judges last week that nitrogen hypoxia is "the most painless and humane method of execution known to man."
Based on oxygen's half-life in the atmosphere, animal life would last at most 100 million years after the loss of higher plants. [12] Some cyanobacteria and phytoplankton could outlive plants due to their tolerance for carbon dioxide levels as low as 1 ppm, and may survive for around the same time as animals before carbon dioxide becomes too ...
Oxygen toxicity is a condition resulting from the harmful effects of breathing molecular oxygen (O 2) at increased partial pressures. Severe cases can result in cell damage and death, with effects most often seen in the central nervous system, lungs, and eyes.
Death penalty for homosexuality, sodomy, [113] apostasy [114] (no recorded executions), blasphemy, [115] adultery, murder, aggravated murder, terrorism, torture, rape, armed robbery, attempted armed robbery, arson, accomplice to a death-eligible crime, assaulting a judge or public official in the course of his duties resulting in his death ...
Texas has executed the most inmates of any other state in the nation, and it's not even close. The Lone Star state has put 591 inmates to death since 1982, most recently Garcia Glen White on Oct. 1.