text: what exactaly does greenhouse effect have to do with global warming?   greenhouse effect refers to the manner in which the buildup of certain gases trap a certain percent of the suns rays from reflecting back into space.  this percentage of the suns rays are re-reflected back into the earth's atmosphere, which causes an average overall warming of the earth's climate.  the effect is similar to the way that sunlight is reflected back upon itself within a greenhouse, causing the air inside a greenhouse to be warmer than the air outside.