A river contains a large number of dissolved substances. What is responsible for this occurrence? Chemical erosion causes water to dissolve minerals and other substances The physical breakdown of larger substances creates molecules that are suspended in water The water is acidic and dissolves everything it comes into contact with The particles under the river are suspended in the water and seem like they are dissolved

The correct answer is: Chemical erosion causes water to dissolve minerals and other substances.<br /><br />Explanation: Rivers contain a large number of dissolved substances due to the process of chemical erosion. Chemical erosion occurs when water interacts with minerals and other substances in rocks and soil, causing them to dissolve into the water. This process is responsible for the presence of dissolved substances in rivers.