";s:4:"text";s:1659:" The greenhouse effect is caused by greenhouse gases; the most important greenhouse gases in Earth's atmosphere are: water vapor, carbon dioxide, and methane. Simply put, it keeps the earth warm enough to sustain life. The greenhouse effect occurs when certain gases in the Earth's atmosphere (the air around the Earth) entraps infrared radiation.This makes the planet become warmer, similar to the way it makes a greenhouse become warmer.. Effects of climatic change. Of those gases, known as greenhouse gases, water vapor has the largest effect.
The greenhouse effect is the retention by Earth ’ s atmosphere in the form of heat some of the energy that arrives from the sun as light.
Greenhouse effect, a warming of Earth’s surface and troposphere (the lowest layer of the atmosphere) caused by the presence of water vapor, carbon dioxide, methane, and certain other gases in the air.