According to Wegener's Continental Drift theory, how long ago did the supercontinent Pangaea begin to break apart? A. About 200 million years ago B. About 500 million years ago C. About 1 billion years ago D. About 5 billion years ago 相关知识点: ...
Gondwana was an idea long before anybody figured out how or why it worked — the secret, of course, being plate tectonics, an idea that didn't really start gaining steam until the mid-20th century. But a 19th-century Austrian geologist named Eduard Seuss put a name to the concept of the...
Andonthebackofthat,theworldchangedforever. 当时的古泛大hearts;陆hearts; Backthen,thesupercontinentofPangaea 正在逐步分hearts;裂hearts; wassplittingup. 很多小块的大hearts;陆hearts;正在形成 Smallercontinentswereforming... 创造了无数新的地貌景观 creatingcountlessnewlandscapes... 新气候新环境 withnewclimates...
Eventually, the climate on Earth became more stable in theArchean Eon. Instead of a molten state, the Earth started to cool down. Water vapor condensed to form oceans. And the Earth cooled down enough to create continents. Though opinions vary,“Vaalbara” became Earth’s first supercontinent....
Welcome to the era of dinosaurs. As desert-like conditions began to spread, dinosaurs (terrible lizards in Greek) began to evolve on thesupercontinent of Pangaea. Similar to reptiles, they had scaly skin and hatched eggs like reptiles.
The next time you're in a eucalyptforest, take a look around and notice all of the different types of bark and gumnuts and leaves on the trees, and know that all of that diversity has happened quite recently, but with a deep and long link totreesthat once grew in Gondwana. ...