greenhouse gas 
noun
A gas that contributes to the greenhouse effect by absorbing infrared radiation. Carbon dioxide and chlorofluorocarbons are examples of greenhouse gases.It is virtually certain that increasing atmospheric concentrations of carbon dioxide and other greenhouse gases will cause global surface climate to be warmer....
- Although an excess of greenhouse gas results in global warming, naturally occurring greenhouse gases are beneficial in keeping our planet at a comfortable temperature.
- Higher concentrations of carbon dioxide and other greenhouse gases in the atmosphere will lead to increased trapping of infrared radiation.
- avocet
- Avogadro, Amedeo
- Avogadro's constant
- Avogadro's hypothesis
- Avogadro's law
- Avogadro's number
- a voice in the wilderness
- avoid
- avoidable
- avoidably
- avoidance
- avoidance behavior
- avoidance behaviour
- avoidance relationship
- avoidance response
- avoidant
- avoidant disorder
- avoidant personality disorder
- avoider
- avoid someone/thing like the plague
- avoirdupois
- avoision
- Avon
- Avondale
- avondbloem