Answer: The El Nino Southern Oscillation, a periodic warming and cooling of the surface waters of the central and eastern equatorial Pacific Ocean, is an ongoing cycle of long duration. That is, as far back as weather records go, there is evidence of this seasonal variation.
Explanation:
Answer:
Localizada entre 15 e 35 quilômetros de altitude e com cerca de 10 km de espessura, contém aproximadamente 90% do ozônio atmosférico.
Answer:
There are several tectonic provinces collectively called as crystalline providences.
Explanation:
- The geology of Appalachians consists of Blue Ridge, Piedmont, Adirondack, and the New England providences. They are known as Crystalline provinces.
- The sinking of the oceans continued about 270 million year ago due to which a huge mass of rocks was pushed westwards along the margins of North America and piled up to form the mountains.
- The Sierra Nevada is the youngest mountain range on the west coast of the United States.
Answer:
President Andrew Johnson's plans for Reconstruction were the same as President Lincoln's plans: The union would be reunited, and the South should not be punished. Johnson planned to do this by pardoning Southerners who, though they took part in the war, pledged allegiance to the United States.
Explanation:
Ocean floor subducts under continents because the ocean floor is softer and the crust in here is with lesser density and thickness, while the continents are harder because their crust is thicker and has bigger density. So when they collide, the softer ocean floor is pushed downwards by the harder continental crust.
