Trace gas causes its strong absorption of infrared radiation. Below is a table of some of the major greenhouse gases with man-made sources and their contribution to the enhanced greenhouse effect. Key Greenhouse Gases and Sources In contrast, the most abundant gases in the atmosphere are not greenhouse gases. The main reasons is because they cannot absorb infrared radiation as they do not have vibrations with a dipole moment. For instance, the triple bonds of atmospheric dinitrogen make for a highly symmetric molecule that is very inert in the atmosphere. The residence time of a trace gas depends on the abundance and
Most common words in English about half of all written English. According to a study cited by Robert McCrum in "The Story of English," all of the first hundred of the most common words in English are of Anglo-Saxon origin, except for "people", ultimately from Latin "populus", and "because", in part from Latin "causa". Some lists of common words distinguish between word forms, while others rank all forms of a word as a single lexeme (the form of the word as it would appear in a dictionary). For example, the lexeme "be" (as in "to be") comprises all its conjugations ("is", "was", "are", "were", etc.),