Greenhouse gases are gases in Earth's atmosphere that trap heat They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere The main greenhouse gases areClimate change refers to significant changes in global temperature, precipitation, wind patterns and other measures of climate that occur over several decades or longer Discover an AZ glossary of concise scientific explanations to help readers better understand climate change from science› en español Scientists attribute the global warming trend observed since the mid th century to the human expansion of the "greenhouse effect" 1 — warming that results when the atmosphere traps heat radiating from Earth toward space Certain gases in the atmosphere block heat from escaping Longlived gases that remain semipermanently in the atmosphere and do not respond
What Is Greenhouse Effect Definition Causes And Effects