What is the Isthmus of Panama? a flat basin in Central America
a mountainous area in South America
a narrow land bridge in Central America
an area of high elevation in South America
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If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.

Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics

Witch of the following types of boundaries is most likely to result in a subduction zone