Which of the following countries has a system of rule that does not let people choose their government, but has an economic system that allows for outside investment?

north korea
south korea
china
japan

Arid and semiarid subcategories are part of which climate

What was the great rift valley formed by

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted