Answer:
That is much less often than in the last 150 million years, when the field has flipped every 600,000 years. In the last 10-20 million years it has sped up even more, to once every 200,000-250,000 years. "The evidence points to a more stable field in the very far past and fewer reversals," says Veikkolainen.
This movement is called convection. It can be found in liquids, gasses and rheids - solids that can also experience movement ( on a big time scale), such as the earth mantle. One of the types of convection is diffusion: net movement of gasses from higher to lower concentration areas.
The first coordinate "29°N 98°W" is located in the following:
City: Falls City
Country: United States
Continent: North America
An for the second coordinate "19°N 99°W:"
City: Tlalnepantla
Country: Mexico
Continent: North America
A. The U.S.-Mexico border.
B. You left Texas and are now in the Federal District of Mexico.
C. It is next to Mexico City, which is both politically and economically the most important city in Mexico.
D. The Sierra Madre del Sur Mountain Range.
On the timeline, an event that happened in 2009 would be <u>To the right of 2000 CE</u>
