How many seismic stations are needed to determine the location of an earthquake's epicenter?

If sin42 degrees = 2/3 then cos48 degrees = what? If tan20.5 = 3/8, the tan69.5 = what?

What conditions cause glaciers to grow larger and advance?

If you lived at latitude 45 degrees on uranus, for what fraction of a uranian year would the longest winter night last?

In Mexico the expression porfiriato refers to a. the oppressive rule of Porfirio diaz b. the end of the political dominance of the PRI in July 2000 c. any kind of authoritarian political oppression d. the revolution of 1911 that overthrew Diaz

What part of Africa had a large supply of salt? East African coast Northern Africa Southern Africa Central Africa

After chloroflurocarbons were banned, which class of chemicals was used in their place? a. hydrofluorocarbons b methane c. sulfur dioxid d. carbon dioxide

What is the most likely reason the Pueblo constructed most of their buildings out of adobe? A. The architectural style of this type of building was appealing to Pueblo society. B.

This type of economy is often found in a democracy. A) command economy B) traditional economy C) market economy D) restricted economy

How is ozone beneficial to life on earth?

Which of the following has a direct effect on precipitation and climate?