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10. Sloths can hold their breath for up to 40 minutes, while dolphins can only hold theirs for around 10 minutes. ... 31. Up to 60% of the human adult body is water. 32. Humans have 99.9% of the ...
The statistical criteria for a standard metropolitan area were defined in 1949 and redefined as a metropolitan statistical area in 1983. [3] A typical metropolitan area is polycentric and no longer monocentric due to suburbanization of employment and has a large historic core city, such as New York City or Chicago. [4]
Hydrogen peroxide ( H2O2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy. [9] [10] Although the O−O bond is a single bond, the molecule has a relatively high rotational barrier of 386 cm −1 (4.62 kJ / mol) for rotation between enantiomers via the trans ...
The first documented use of the phrase "United States of America" is a letter from January 2, 1776. Stephen Moylan, a Continental Army aide to General George Washington, wrote to Joseph Reed, Washington's aide-de-camp, seeking to go "with full and ample powers from the United States of America to Spain" to seek assistance in the Revolutionary War effort.
The International Commission of Inquiry for Burundi presented to the United Nations Security Council in 1996 concluded that the Ikiza was a genocide. [109] As much as 10% to 15% of the Hutu population of Burundi killed [108] Bangladesh genocide. East Pakistan (now Bangladesh ) 1971. 300,000 [110] 3,000,000 [111] [112]
Ethanol is the oldest known sedative, used as an oral general anesthetic during surgery in ancient Mesopotamia and in medieval times. [16] [17] Mild intoxication starts at a blood alcohol concentration of 0.03-0.05 % and induces anesthetic coma at 0.4%. [25] However, this use carried the high risk of deadly alcohol intoxication and pulmonary ...