Importancia de los recursos naturales en el ambito economico y social

Answer decreased soil salinity;

Answer they are produced by collision of tectonic plates;

The telegraph idk what else to tell you you are probably just gonna copy it which btw i would do the same thing but it says i have to have at least 20 characters so yeah there you go 

Ibelieve it is c
c makes more sense when you’re trying to pair them together!