Gas solubility refers to the ability of a gas to dissolve in a liquid. This process is influenced by factors such as temperature, pressure, and the nature of the gas and liquid involved. Generally, higher pressure increases gas solubility, while higher temperatures decrease it. For example, carbon dioxide (CO2) is more soluble in cold water than in warm water, which is why fizzy drinks lose their carbonation when warmed. Different gases have varying solubility levels in the same liquid. For instance, oxygen (O2) is less soluble in water compared to carbon dioxide. This difference is important in fields like environmental science, where the solubility of gases affects aquatic life and ecosystems. Understanding gas solubility is crucial for applications in chemistry, biology, and engineering.