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:
D. Precipitation
Explanation:
Human environment interactions are interactions between humans and the environment.
Let’s examine each answer choice.
A. Dams are barriers that are built to stop water. Humans build them, so it is a human environment interaction.
B. Farms are plots of land humans use to raise crops and animals. Therefore, they are human environment interactions.
C. Irrigation is a way to water crops. Humans build them. They are human environment interactions.
D. Precipitation is rain, snow, hail and more. Humans can’t control it, so it is not a human environment interaction.
Therefore, the best answer is D. Precipitation.
Answer:
migration is a strong force for equalizing the gene frequencies of sub populations in a species. Provided that the migration rate is greater than zero, gene frequencies will eventually equalize.
Answer:
they are not in the same places and the are named different
Explanation:
Natural environment is of crucial importance for social and economic life. We use the living world as<span>a resource for food supplyan energy sourcea source for recreationa major source of medicinesnatural resources for industrial products</span><span>In this respect the diversity of nature not only offers man a vast power of choice for his current needs and desires. It also enhances the role of nature as a source of solutions for the future needs and challenges of mankind.</span>
