Gases always move from areas of __ pressure to areas of __ pressure.

Gases naturally move from areas of higher pressure to areas of lower pressure due to the principle of diffusion and the behavior of gas molecules. This movement occurs because gas molecules are constantly in motion and will spread out to fill the available space. When there is a pressure difference, with a concentration of molecules in a higher pressure area, those molecules will seek to move into the lower pressure zone.

This phenomenon is a fundamental aspect of gas behavior and is critical in various applications, including ventilation systems, respiratory processes, and firefighting tactics. Understanding this principle allows firefighters and emergency responders to predict airflow patterns and to effectively manage smoke and hazardous gas dispersal during emergency situations, ensuring the safety of both victims and rescuers.

The other choices do not correctly represent this fundamental behavior of gases. Higher to higher pressure, lower to higher pressure, or lower to lower pressure do not align with established principles of physics regarding gas movement.