Answer:
A. Crests and troughs that remain stationary although the air forms them is moving rapidly.
Explanation:
The standing waves are a phenomenon that is a result of the interference of two wavelengths. The air over the mountain ranges is of high intensity as a result of temperature elevation. Fast movements of air currents produce scrambled ripples, as a result, the pattern of air crest and troughs remains static.
Answer:
The population is very unequally distributed over the four parts of the UK: England makes up about 84 per cent of the total population, Wales around 5 per cent, Scotland roughly 8.5 per cent, and Northern Ireland less than 3 per cent.
Large number of skilled workers left Iran in the early 21st century, primary because they sought more skilled opportunities in countries like the United States.
Explanation:
Iran is a powerhouse in the Middle East, being the largest and probably the most powerful military country. The economy and the opportunities for the people in it are not so shiny though. Even though the economy seems to be relatively stable, the problem is that the opportunities in it are very limited. The reason for this is that Iran's economy only focuses on few things, while the other sectors are neglected, so many people are either working in fields they don't want to, or don't work at all.
- Lot of people that had certain skills left the country because of lack of opportunities, or being under-payed.
- The Western countries, such as the United States were seen as very attractive as they were able to make careers there and work in accordance to their skills.
- The trend of migration out of Iran by skilled workers toward the West still continuous and it seems that it will do so until the country solves its issues.
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Answer:
- Volcanoes go dormant because magma from the Earth's mantle can no longer reach the volcano.
- The landform nearest to it is rocky mainly consist of igneous and metamorphic rocks.
- A dormant volcano is an active volcano that is not erupting, but supposed to erupt again and it's also called the "sleeping giant".
I've attached a picture too which shows the landforms near a dormant volcano.
