Why do many scientists support the land bridge theory of migration? Check all of the boxes that apply There is a land bridge connecting Asia and North America today.
Aland bridge connected Asia and North America thousands of years ago.
Aland bridge would have allowed the first migrants to spread rapidly across North America.
Crossing the land bridge would have been simple for the first migrants.
People might have crossed a land bridge while hunting animals.

What two properties affect the density of ocean water

The dashed segment of the plotted experiment in the graph in the lesson is called an

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.