What tectonic plates make up south america?

The tectonic plates that make up South America are the Nazca Plate, the Caribbean Plate and the North American Plate. The western side of the continent is the Nazca Plate while the northern end is a boundary formed with the Caribbean Plate and the oceanic crust from the North American Plate.

Answer(a); // soil salinization and waterlogging;

Answer light in color; silica-rich;