5 小时之前 · Hydrothermal vents exist because the Earth is both geologically active and has large amounts of water on its surface and within its crust. Under the sea, they may form features …
1 天前 · The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen …
5 小时之前 · Birds are a group of warm-blooded vertebrates constituting the class Aves (Latin:), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high …
5 小时之前 · The Joker is a supervillain who appears in American comic books published by DC Comics.He was created by Bill Finger, Bob Kane, and Jerry Robinson, and first appeared in …
5 小时之前 · The Han dynasty [a] was an imperial dynasty of China (202 BC – 9 AD, 25–220 AD) established by Liu Bang and ruled by the House of Liu. The dynasty was preceded by the …
1 天前 · Cape Breton Island (French: île du Cap-Breton, formerly île Royale; Scottish Gaelic: Ceap Breatainn or Eilean Cheap Bhreatainn; Mi'kmaq: Unamaꞌki) [5] is a rugged and …
1 天前 · Video of a Welsh speaker. Welsh (Cymraeg [kəmˈraːiɡ] ⓘ or y Gymraeg [ə ɡəmˈraːiɡ]) is a Celtic language of the Brittonic subgroup that is native to the Welsh people.Welsh is spoken …