Unlike hierarchical diffusion contagious diffusion (2 points)
a. spreads from urban areas to rural areas
b. originates from a center of power
c. has a group impact across socioeconomic groups
d. involves the spread of ideas
e. spreads slowly over a long period of time

When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?

How far is a geographic second? a.) around 100 feet b.) around 1,000 feet c.) around 5,000 feet d.) none of the above

Where is the only active diamond mine in the u.s.?