Atmosphere of Earth Atmosphere of Earth The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity. The atmosphere of Earth protects life on Earth by creating pressure allowing for liquid water to exist on the Earth's surface, absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variation). By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water
The Adventure of the Noble Bachelor The Adventure of the Noble Bachelor "The Adventure of the Noble Bachelor", one of the 56 short Sherlock Holmes stories written by British author Sir Arthur Conan Doyle, is the tenth of the twelve stories collected in "The Adventures of Sherlock Holmes". The story was first published in "Strand Magazine" in April 1892. The story entails the disappearance of Hatty, Lord St. Simon's bride on the day of their marriage. She participates in the wedding, but disappears from the reception. The events of the wedding day are most perplexing to Lord St. Simon as it seemed to him that his