Cities are _ permanent human settlements. When cities start merging with surrounding suburbs to accommodate growing populations_, areas are formed. An example of such an area in the United States is_ .

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

What is the approximate chemical composition of the solar nebula?

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.