According to Rubenstein, what are the two main concentrations of human geography?

The last photo u wonder what is this telling me to do?

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

Extensive and unusual cold snaps have occurred here recently. is this evidence that global warming is lessening or not occurring? no—although the long-term trend is for warming, short-term weather patterns can still be variable. no—melting of glaciers and ice caps is making the oceans cooler, which can cause cold snaps. yes-- if global warming really were occurring, cold snaps wouldn’t happen. yes—due to global warming, weather patterns should be become less—not more—variable.