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Aurora australis seen from the ISS, 2017 [1]. An aurora [a] (pl. aurorae or auroras), [b] also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), [c] is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic).
This is an accepted version of this page This is the latest accepted revision, reviewed on 25 September 2024. Variety of the color blue For other uses, see Shades of Blue (disambiguation). "Shade of Blue" redirects here. For the song by Black Rebel Motorcycle Club, see Shade of Blue (song). For the R&B/funk band, see Shade of Blue (band). Blue Wavelength 440–490 nm Common connotations ...
Greenwashing (a compound word modeled on "whitewash"), also called green sheen, [1] [2] is a form of advertising or marketing spin that deceptively uses green PR and green marketing to persuade the public that an organization's products, goals, or policies are environmentally friendly. [3]
Yellow maizes derive their color from carotenoids; red maizes are colored by anthocyanins and phlobaphenes; and orange and green varieties may contain combinations of these pigments. [35] Maize has short-day photoperiodism, meaning that it requires nights of a certain length to flower.
A funeral is a ceremony connected with the final disposition of a corpse, such as a burial or cremation, with the attendant observances. [1] Funerary customs comprise the complex of beliefs and practices used by a culture to remember and respect the dead, from interment, to various monuments, prayers, and rituals undertaken in their honour.
Though gasoline is a naturally colorless liquid, many gasolines are dyed in various colors to indicate their composition and acceptable uses. In Australia, the lowest grade of gasoline (RON 91) was dyed a light shade of red/orange, but is now the same color as the medium grade (RON 95) and high octane (RON 98), which are dyed yellow. [110]
The size of Africa compared to other continents. Africa is the world's second-largest and second-most populous continent after Asia.At about 30.3 million km 2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area. [7]