Planet Earth is home to 7.3 billion people and over 1.5 million different species of animals, insects, and plants spread across 7 continents. Earth was not always comprised of seven continents. A billion years ago, the world would have been much different being made of much more water than w...
The idea of a supercontinent is that most of the world's continents are pushed together. The thing to realize is that today's continents are patchworks of pieces of older continents. These pieces are called cratons ("cray-tonns"), and specialists are as familiar with them as diplomats are...
@anon46386-- I think it has to do with the size. It has to be a considerable size for it to be a continent. Islands are way too small to be continents. There are millions of islands on earth, most of them inhabitable. Can you imagine what would happen if we called each one a co...
[11] The highly energetic chemistry is believed to have produced a self-replicating molecule around 4 billion years ago.[12] Continents formed, then broke up and reformed as the surface of Earth reshaped over hundreds of millions of years, occasionally combining to make a supercontinent. Roughly...
Another period of extreme volcanic activity 201 million years ago marked the end-Triassic mass extinction. It has been linked to thebreakup of the Pangea supercontinentand the opening of the central Atlantic Ocean. Many land reptiles vanished as a result of that catastrophic event, making way for...
How could tectonic plate movement create another supercontinent like Pangaea? What are the two types of tectonic plates? What is a trench in plate tectonics? What tectonic plates make up the Ring of Fire? What are the three types of plate tectonics?
What rivers are in the Blue Ridge Mountains? What is a glacial landform? What mountain range is in Virginia? Where do the Appalachian Mountains start in Alabama? What supercontinent formed at the end of the Appalachian orogeny? What mountain range is in West Virginia?
The supercontinent Pangaea which had dominated the Triassic period was rapidly breaking up, and mountains rising up from the ocean floor pushed sea levels up. This made the previously hot and dry climate fairly humid, and prompted the growth of many more plants and trees such as palms and ...
The theory of continental drift arose from Alfred Wegener back in 1912, who was the key theorist in such hypothesis. Wegener estimated that one large piece of land, also described as a single supercontinent, existed; he called this Pangea. He later postulated that Pangea broke apart into smalle...
The theory of continental drift arose from Alfred Wegener back in 1912, who was the key theorist in such hypothesis. Wegener estimated that one large piece of land, also described as a single supercontinent, existed; he called this Pangea. He later postulated that Pangea broke apart into smalle...