G reenhouse gases & Global warming 30% of the portion of energy is reflected or scattered back to the space  Stratosphere absorbs about 19% of the available energy (like UV) is absorbed by the clouds, gases (like ozone), and dust. About the 51% of the sun’s radiation reaches the surface of the earth, and this can heat the surface to an average temperature of -20°C. If this is the case, water will remain as ICE all over the earth. There will be no water in liquid or in gaseous form, as a result Earth will appear as white Ball. Greenhouse Effect     Solar radiation is absorbed by the surface and re-emitted back to the atmosphere as longer wavelength. Absorption of longer wave radiation causes additional heat energy to the atmosphere. Over 90% of energy is directed back to the earth surface, and again this process is repeated, until no longer wave is available for absorption.    And this process contributes the heating up of earth to an average te...