Answer:
Basaltic magma -- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na
Andesitic magma -- SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K
Rhyolitic magma -- SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na
Explanation:
How do scientists explain the fact that some land-forms that are far apart and separated by oceans appear to be related?
A. Earthquakes
B. Continental Drift
C. Volcanic Eruptions
D. Erosion
Answer: Mount Everest in Nepal
Explanation:
United States Constitution was ratified in 1789, but had not much without a very considerable debate. During Constitutional Convention, delegates debated major issues such as the makeup of the legislature and the effect of slavery on representation.
The correct answer is letter B. The country's official policy emphasizes "gross national happiness." The following are not true about Nepal which includes "up until 2006, Maoist guerillas caused major disruptions in urban areas," "it became a democracy in the 1980s," and it's a Muslim country that has fostered good relations with the British.
