Wegener's idea was that all the Earth's landmasses had once been a _____ called _____.
A ) series of islands, Gowannaland
B ) single point, a singularity
C ) submerged seafloor, Gaia
D ) supercontinent, Pangea
D ) supercontinent, Pangea
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Most people in the world live in more-developed countries.
Answer the following statement true (T) or false (F)
Did this make it easier or more difficult to interpret earthquake risk in the United States?
Sometimes it is useful to make a layer transparent so that the basemap (in this case the imagery) can be seen below the layer. Click on the ellipses below the USA Earthquake Risk layer name and select “Transparency.” Set transparency to 50%.
________ refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking.
A) Slurrying B) Liquefaction C) Motion slip D) Seismoflowage
Unfenced grasslands in tropical and temperate climates that supply forage for grazing animals are called ____.
A. pastures B. rangeland C. savannah D. steppes E. veldt