Gas fractions refer to the proportions of different types of gases present in a specific environment or sample. This research area typically involves analyzing the composition of gases, such as oxygen, carbon dioxide, nitrogen, and methane, in various settings such as the atmosphere, bodies of water, or soil. Understanding gas fractions is important for various scientific fields, including environmental science, atmospheric science, and geochemistry, as it can provide insights into processes such as photosynthesis, respiration, and the carbon cycle. Researchers may use a variety of techniques, such as gas chromatography or spectrophotometry, to measure and analyze gas fractions in different samples.