Glossary of "Ecology (6th ed.)" by Krebs (2009)
- gases present in the Earth's atmosphere that reflect infrared radiation back to Earth, thus warming it. The most important ones affected by humans are carbon dioxide, methane, nitrous oxide, and chlorofluorocarbons. Water vapor also act as a greenhouse gas.
Glossary of "Life (9th ed.)" by Sadava et al. (2011)
- Gases in the atmosphere, such as carbon dioxide and methane, that are transparent to sunlight, but trap heat radiating from Earth's surface, causing heat to build up at Earth's surface.
Glossary of "Evolution of Plants (2nd ed.)" by Willis & McElwain (2014)
- Gases in the atmosphere (e.g. CO2, CH4) that trap radiation re-emitted by the Earth, resulting in increasing global temperatures.
- Krebs, C. J. 2009. Ecology, 6th ed. -xvi + 655 pp. Pearson Benjamin Cummings, San Francisco.
- Sadava, D., Hillis, D. M., Heller, H. C. & Berenbaum, M. R. 2011. Life: The Science of Biology, 9th ed. -xliv + 1266 pp. Sinauer Associates, Inc., Sunderland.
- Willis, K. J. & McElwain, J. C. 2014. The Evolution of Plants, 2nd ed. -ix + 398 pp. Oxford University Press, Oxford.