Fill up the blanks:
A. Clouds and gases reflect about ___I___ of the incoming solar radiation, and absorb some of it but almost half of incoming solar radiation falls on Earth's surface heating it, while a small proprotion is reflected back. Earth's surface re-emits heat in the form of ____II____ radiation but part of this does not escape into space as atmospheric gases (e.g. carbon dioxide, ___III____, etc.) absorb a major fraction of it.
B. During the past century, the temperature of Earth has increased by ___I___ most of it during the last three decades. Scientists believe that this rise in temperature is leading to deleterious changes in the environment and resulting in odd climatic changes (e.g. ___II___), thus leading to increased melting of polar ice caps as well as of other places like the Himalayan snow caps.
C. In human eye, cornea absorbs UV-B radiation, and a high does of UV-B causes inflammation of cornea, called ___I____, cataract, etc. Such exposure may permanently damage the cornea.
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