P waves do not move through liquid material
Reactions involving fire are typically characterized as combustion reactions in which a material is oxidized, producing carbon dioxide, water, and carbon monoxide in some incomplete combustion reactions.
The answer is signal transduction. It is also known as cell signaling. It is the transmission of molecular signals beginning from a cell's exterior to its interior. Signals got by cells must be transferred efficiently into the cell to make certain a suitable response. This step is started by the cell-surface receptors.
