How do buffers work to maintain a stable pH level in a solution?

Buffers work by resisting changes in pH levels in a solution. They do this by either accepting or donating hydrogen ions to maintain a stable pH. When there are too many hydrogen ions, the buffer will absorb them. When there are too few, the buffer will release hydrogen ions. This helps to keep the pH level within a specific range, preventing drastic changes in acidity or alkalinity.