The Gulf War was a conflict that involved Iraq, Kuwait, and 39 additional countries. The leader of Iraq, Saddam Hussein, invaded the small country of Kuwait and seized its oil fields. The president of the United States at the time, George H.W. Bush, led a coalition of 39 countries to stop Saddam Hussein and to help the citizens of Kuwait. The conflict in Afghanistan began in 2001 after the United States was attacked by a terrorist group. The United States believed that Afghanistan was harboring the terrorists responsible for the attacks, so it invaded the country and overthrew its government. The efforts to rebuild and stabilize the country are ongoing. The war in Iraq started in 2003. The conflict was between Iraq, the United States, and a few US allies. It was believed that Iraq was in possession of weapons of mass destruction and also linked to terrorist activities. The United States invaded Iraq and overthrew its government. The efforts to rebuild, stabilize, and create a democracy in Iraq are ongoing. Many internal conflicts, known as the Arab Spring, erupted in the Middle East starting in January of 2011. Citizens in countries such as Lebanon, Egypt, Syria, Tunisia, Libya, and Bahrain led protests against their governments. The people living in these countries are tired of living under dictators that do not allow them to participate in government and treat them unfairly.
Explanation:
Answer:
E. Mineral content
Explanation:
Viscosity is an internal property of a fluid that offers resistance to flow, the nature of volcanic eruptions is highly dependent on magma viscosity and also on dissolved gas content (dissolved gases become trapped by thick magma and the magma chamber begins to build pressure).
The viscosity of magma is controlled by the size of the molecules that comprise it.
<em>Felsic lava contains elements of small size (sodium and aluminum), these elements form polymers and large crystalline macromolecules like silica, the more extensive silicate chain molecules the more viscous the magma becomes, this happens because larger molecules have stronger intermolecular bonds preventing movement and spreading. </em>
Mafic and ultramafic lava, on the other hand, have lower viscosities, also contain lower quantities of silica and aluminum and are rich in magnesium oxide, which does not form large molecular structures, therefore lava flows smoothly, unrestricted by intermolecular forces.
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