What did Richard Maddox invent? why was this important?

Many nations besides the united states now have nuclear weapons. how do you think this changes the way countries think about war?

Which is the most shiniest star? (Besides the sun)

Read the following selection from the article. They use the language in their jobs and that impresses people.

Which geologic period lasted for almost 7/8 of earth's history? A. the Precambrian time B. the Phanerozoic Eon C. the Carboniferous Period D. the Quaternary Period

Which of the following best describes what would have to change to transform a parliamentary democracy into a representative democracy? A. An individual would have to take direct control of the government. O B.

Convection currents within the Earth cause plate tectonics due to the movement of the mantle?

Which subregion are The Great Lakes are part of? A. New Englan B. Mid-Atlantic C. Midwest D. Southeast

What scientist first proposed that the sun is the center of the solar system? a. Brahe b. Kepler c. Ptolemy d. Copernicus

What get inverted, or turned over in a thermal inversion?

The Mycenaeans were located in this country. A. Italy B. Spain C. Turkey D. Greece