The invention of the internal combustion engine allowed which advancement?
a. light bulb
b. steamships
c. airplanes

Why are nongovernmental organizations important? check all that applya. they are private institutions that aid the work of government.b. they often fill in gaps between government-funded services. c. they are private institutions that attack government policyd. they citizens by acting as watch dogs over elected officials

Which event most likely explains renewed demand in a recovery period? consumers choose to save more and spend less. economic policy renews consumer confidence and demand. producers decrease prices to prompt demand and recovery. production decreases to prompt increased demand.

Explain the differences between convergent, divergent, and transform fault boundaries.