Air pollution first a widespread problem

a) about 100 years ago
b) during the 1700s
c) 100,000 years ago
d) during the 1200s

Which quantities decrease as the distance between a planet and the sun increases? check all that apply.

What was unification difficult to accomplish in both germany and italy? a.) weaker states we’re attacked by stronger states for control of the emerging nations. b.) major european powers fought to keep independent states under their control. c.) germans and italians did not share common histories and languages.

Civil liberties in latin america vary. this means that