To increase the limited amount of flat land available for wet rice cultivation, farmers have a. terraced hillsides of river valleys. b. combined resources within communes. c. planted over paths and roads. d. cleared forests and dense vegetation. e. cultivated seedlings in greenhouses.

A terraced hillsides of river valleys.
(Terrace farming... used in Japan)

A.terraced hillsides of river valleys.

terraced hillsides means to cut 'flat-areas' into a hill to help create farmlands. They are used mostly in the Asias and South America.

hope this helps

  consider  the  following scenario,  then describe  how  you might conduct  a  study using  ansrs,  convenience sample, and a  voluntary response sample.  you  are  interested  in  parents'  opinion  of the  war  in  iraq.  your population  is  parents  of  high school students.  your question  is, "do you  believe that the  war  in