Answer:
Much of the X-ray and UV radiation from the Sun is absorbed in the thermosphere. When the Sun is very active and emitting more high energy radiation, the thermosphere gets hotter and expands or "puffs up".
Explanation:
Hello @D1fficult,
How are you doing? As of your question, "<span>What is the main cause of the differences in the physical characteristics of the Middle East and South America?"
Well, some differences that you would see is that, first of all, the Middle East is desert. The climate is dry, almost no rain, sandstorms, and heat. In the night, its cold, more water supply, however it still is dry. Their is mountains there, and almost no animals.
South America, you may know as the Amazon Forest. The Amazon Forest is everything but the Middle East. The climate is always wet, and its always raining. Lots of Vegetation, and animal variety.
I hope that you are able to see the difference, and I hope this helped you, if you need any more help, contact me!
Thank you,
Darian D.</span>
Answer:
A nation-state is a state where the vast majority of the population is comprised of a single ethnic group which also serves as a motivation and reason for the formation of the state.
Explanation:
A nation-state is a term used for the nations where the vast majority of the population is comprised of a single ethnic group, usually over 90%. There are multiple examples of such states around the world, some of which are fully recognized, while some function in practice as such but are not officially recognized by the United Nations. In the first category, we have the likes of Mongolia, Iceland, and numerous island nations in the Pacific, while in the second one we have the likes of Kosovo and South Ossetia.
These nations are often formed on the basis of the distribution of an ethnic group, thus determining the boundary in accordance with where the particular ethnic group is found without interruptions. An interesting case was the recent referendum for independence in Scotland as if it was successful it would have meant the creation of another nation-state. This was carefully monitored by many ethnic groups in the world because they saw it as an opportunity to create their own nation-states.
