Americans spent O a. more than 15.6

percent of our wages to feed ourselves in 2010.

O b. about 11.3

O c. only 9.4

O d. roughly 12.8

Which plate boundary causes plates to collide forming mountain ranges, volcanoes, and island arcs? give an example of this type of plate boundary. 2. at which plate boundary do rifts and mid-oceans ridges form? give an example of this type of plate boundary. 3. at which plate boundary do plates slide past each other while moving in opposite directions? give an example of this type of boundary.