Gabon, Congo, Democratic Republic of Congo, Uganda, Kenya, and Somalia.
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.
Asemanari:
->roci sedimentare , de exemmplu : nisip , pietris, argila
->sunt foarte frecvente alunecarile de teren in aceste zone
->sunt format in era neozoic
Deosebiri:
->Depres. col a Trans: -> are inaltimi > 100 m
-> Pod. Moldoveni -> inaltimi foarte foarte mici
-> Depres. col a Trans ->exista domuri cu metan [CH4]
-> Pod. Moldovei -> nu exista domuri
->Depres.col a Trans-> are depresiuni in munti
->Pod. Moldoveni -> nu are depresiuni , e neted
La historia del atletismo puede ser tan antigua como la de la humanidad. Desde los tiempos primitivos, todo ser humano muestra una tendencia natural a poner a prueba sus recursos físicos, además de que para sobrevivir hacía falta correr detrás de la presa para posteriormente cazarla con el lanzamiento de una herramienta.
