Sand dunes are formed by wind.
Explanation: Dunes form when wind blows sand into a sheltered area behind an obstacle.
The Russian Revolution took place in 1917, during the final phase of World War I. It removed Russia from the war and brought about the transformation of the Russian Empire into the Union of Soviet Socialist Republics (USSR), replacing Russia’s traditional monarchy with the world’s first Communist state. The revolution happened in stages through two separate coups, one in February and one in October. The new government, led by Vladimir Lenin, would solidify its power only after three years of civil war, which ended in 1920.
The answer is to this question is Coal
The current situation in Tunisia offers international development partners, within the region and beyond, an opportunity to bolster the role of citizens, indigenous civil society organizations, and businesses working to harness the talents and skills of job seekers within their country. The regional focus on the events in Tunisia offers international partners an opportunity to invest in projects and businesses working to address some of the development challenges that initially sparked the popular uprising in the country. Playing a successful role in collaborating to rebuild Tunisia's economy and infrastructure will also help such partners bolster their brand in a changing region. They can do this by providing potential opportunities for partnership in other countries in the region, such as Egypt, which is also experiencing a transitional period.
