Make a statement relating hydrogen ion concentration to the acidity and basicity of solutions.

If a solution has more hydrogen ion concentration, the solution is acidic and if a solution has less hydrogen ion concentration, the solution is basic.

Explanation:

To determine the acidity or basicity of a solution, we look at the pH of the solution.

pH is defined as the negative logarithm of hydrogen ion concentration present in the solution.

Hence, if a solution has more hydrogen ion concentration, the solution is acidic and if a solution has less hydrogen ion concentration, the solution is basic.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.