Two questions which arises in my mind about aurora borealis are:
- Why does aurora borealis occur?
- Why does aurora borealis occur in a particular time of the year?
Answers:
- As solar wind approaches the Earth, it meets the Earth's magnetic field. In the ionosphere, the ions of the solar wind collide with atoms of oxygen and nitrogen from the Earth's atmosphere. The energy released during these collisions causes aurora borealis.
- Aurora borealis is active the whole year. Since it needs to be dark in order to see aurora borealis in the sky, late August/September through the very beginning of April is the best time to go to a destination located in the aurora zone for a chance to see them.
Note: These are the questions which arises in my mind only. It may differ from person to person.
Hope you could understand.
If you have any query, feel free to ask.
Buenos Aires y Sao Paolo controlan la economía de sus respectivos países, además son las mas pobladas de sus res lectivos países.
Rosario y Asunción son ciudades grandes e importantes que mueven sus exportaciones por rio
Córdoba y Brasilia, ciudades importantes en distintas maneras, pero se ubican en el centro de sus países
Punta Arenas y Ushuaia, las ciudades más al sur de sus países respectivos
Salta y Tarija, sus culturas son muy parecidas y su importancia en sus países también
A. Every parallelogram is a rectangle
Answer: B. Neither rising nor falling
Explanation:
Economic Stagnation occurs when there's a flat growth in a particular economy. During economic stagnation, there's increased unemployment and the economy is also not performing well and performing below its potential.
A country's economy is stagnating when the GDP is neither rising nor falling. This results in the lay off of employees by companies which in turn leads to reduction in demand for goods and services and hence economic growth is negatively affected.