What are the most important dissolved elements in ocean water?

The most important are oxygen, hydrogen and sodium and chlorine

Explanation: Oxygen and Hydrogen make up the water molecules in our oceans, meanwhile, sodium and chlorine make up common salt found in the water.

they made up by solar wind

answercharacteristics of place include things like economic activity, architecture,and culture,all of which are human elements that alter or can be influenced by the environment;