In such a study, scientists examine air stored in bubbles within ice cores at each location, and methane serves as the material for correlation study.
(scientists; examine; air stored in bubbles within ice cores at each location; L:In such a study) (air; stored; L:in bubbles within ice cores; L:at each location) (methane; serves; as the material for correlation study)
scientists air methane
examine stored serves
air stored in bubbles within ice cores at each location L:In such a study
L:in bubbles within ice cores L:at each location
as the material for correlation study