The sun's energy drives various processes on earth. One of these processes is photosynthesis in plants whereby light energy is converted into chemical energy by forming carbohydrates from carbon dioxide plus water, which is a process which usually gives off oxygen which animals need to breathe. Another process driven by the sun's energy could be evaporation of water into the air to form water vapour and clouds which then precipitate when cooled off over mountains so is involved in the water cycle.
Perhaps the study of chemical reactions is not a central theme of biology, but of chemistry.
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a common single-celled green alga which typically has two flagella for swimming, living in water and moist soil.
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Explanation:s cattering of X rays by the atoms of a crystal; the diffraction pattern shows structure of the crystal,he effect of drying temperature on the structural characteristics of the material is discussed by the means of electronic microscopy, X-ray diffraction technique