The correct answer is - They formed long ago, and erosion has beveled them to their present elevation.
The Appalachian Mountain Range is one of the oldest mountain ranges on the planet. They have formed in the Ordovician Period, around 480 million years ago. When they formed and were at their peak, the Appalachians were much larger and higher than what they are in the present. The reason for their decline in size is attributed to the erosion. The erosion is a process that removes the material from its original position. This process has been influencing, at different rates, the Appalachians for almost half a billion years. Even though the erosion is not a process that acts very quickly, when put the time that it influenced these mountains we will see that it managed to lower them significantly. That process continues in the present, and in the manner in which the continents are moving, there shouldn't be any force that will help lift up the Appalachians again, but instead they will continue to shrink until they are flattened in the distant future.
Answer:
<u>Two types of gis data representation method are raster and vector</u>
Explanation:
- In a GIS the data that is represented by the pints, line, and polygons is raster data and it's stored in the real world like phenomenon also known as the discrete data.
- Raster data is made up of pixel values and attributes that are associated with its color values, data is represented by the grids of cells. Stores spatial data more
- Another type of data model being the vector model that focuses on lines, polygons and area points are expressed by the single point reference. For example, cities on a map. A line like the rivers the roads the railroads, trails, and topographic and polygons include the lakes, park boundaries, buildings, etc.
- Vector data is most compatible with the relational database environments. Vector file sizes are hence usually very smaller than raster data. Raster data is computationally less expensive as compared to vector graphics. Stores nonspatial data.
Answer:
Physioeconomically, the Russian Federation may be conveniently divided into 9 major regions: the Central European Region, the North and Northwest European Region, the Volga Region, the North Caucasus, the Ural Region, Western Siberia, Eastern Siberia, Northern and Northwestern Siberia, and the Russian Far East.
Explanation:
