Fact 1: When a river floods , that river deposits soil in flood plains.

Fact 2: By far the mightiest of the great rivers is the Amazon .

Given the two facts above, answer the question "When the Amazon floods it deposits what in flood plain?" with the following options: 
- earth
 - cities
 - rocks
 - dirt
 - seawater
 - Sand
 - saltwater
 - soil


 

        soil 