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2024年5月23日 · water pollution, the release of substances into subsurface groundwater or into lakes, streams, rivers, estuaries, and oceans to the point that the substances interfere with beneficial use of the water or with the natural functioning of ecosystems. In addition to the release of substances, such as chemicals, trash, or microorganisms, water ...
2024年4月18日 · greenhouse effect, a warming of Earth ’s surface and troposphere (the lowest layer of the atmosphere) caused by the presence of water vapour, carbon dioxide, methane, and certain other gases in the air. Of those gases, known as greenhouse gases, water vapour has the largest effect. The origins of the term greenhouse effect are unclear.
- The Editors of Encyclopaedia Britannica
2024年5月16日 · A natural disaster may be caused by weather and climate events or by earthquakes, landslides, and other occurrences that originate at Earth ’s surface or within the planet itself. No spot on Earth is immune from a natural disaster; however, certain types of disasters are often limited to or occur more frequently in specific geographic regions.
3 天前 · Modern global warming is the result of an increase in magnitude of the so-called greenhouse effect, a warming of Earth’s surface and lower atmosphere caused by the presence of water vapour, carbon dioxide, methane, nitrous oxides, and other greenhouse gases. In 2014 the IPCC first reported that concentrations of carbon dioxide, methane, and ...
4 天前 · English language is a West Germanic language that originated in England and spread to many parts of the world. It is the dominant language of several countries and the most widely used lingua franca. Learn about its history, development, characteristics, and varieties from Britannica, the online encyclopedia that covers a wide range of topics and personalities.
3 天前 · Galileo was born in Pisa, Tuscany, on February 15, 1564, the oldest son of Vincenzo Galilei, a musician who made important contributions to the theory and practice of music and who may have performed some experiments with Galileo in 1588–89 on the relationship between pitch and the tension of strings. The family moved to Florence in the early ...
4 天前 · The Black Death is widely believed to have been the result of plague, caused by infection with the bacterium Yersinia pestis. Modern genetic analyses indicate that the strain of Y. pestis introduced during the Black Death is ancestral to all extant circulating Y. pestis strains known to cause disease in humans.
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