It is 4 longitude and elevation
Answer:
84%
Explanation:
Also please remember to chose the right subject your question belongs in!
Answer:
the Appalachian Mountain
Explanation:
The European settlers in what is now the United States quickly started to push the natives of their lands and create their colonies. As they were doing so, they started to establish towns and villages, create their own plantations, implement their rules and laws. But this was all happening along the eastern coastline and in close proximity to it. The reason for this was that they had a very big natural barrier in front of them that didn't allowed them to spread out toward the west. This natural barrier were the Appalachian Mountains. The Appalachians are a mountain range that separates almost all of the eastern coastline area from the interior of the country. These mountains are relatively high, had very dense impenetrable forests, and were very dangerous for crossing, so the Europeans avoided them until they developed better means of travel and transportation.
Answer:
Paleozoic era
Explanation:
The Paleozoic era refers to the time period ranging from 540 million years back to 250 million years back. It is comprised of six distinct periods, namely Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. During this era, a large number of species evolved after the huge Cambrian explosion. The environmental changes that occurred during that time favored the growth of numerous species, and species have undergone radiative adaption.
This era was characterized by the presence of Trilobites that were abundant in the Cambrian. The Crinoids were closely related to the sea urchins and starfishes and are important fossils. Brachiopods were also dominant during this time. Some of them are still found such as the Lingula, which is a living fossil.
These species covered a large geographical extent in the ocean water bodies and were extinct in the huge mass extinction event that took place on earth by the end of Permian.