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.
A rock on Earth's surface tends to be weathered more because it is exposed to wind, precipitation, and the effects of gravity. A rock buried underground does not experience weathering from wind, precipitation, or gravity.
Answer:Ancient Greeks had a lot of time on their hands when they were not involved in wars. They had to time to think about and observe the universe and everything surrounding them. As such, ancient Greek scientists made significant discoveries in numerous fields such as geometry, astronomy, mathematics and medicine.
Explanation:
The correct answer is - In most Latin American countries, the majority of locals speak Spanish.
Most of the countries in South America have Spanish as their official language, but it is not just the language that is a trait that connects people, it is also the influence of the Spanish culture as well, even in the few countries where it is not a dominant language.
