English-Ireland (top end) Renown is listed as a verb in Chambers Dictionary. I looked for etymology - the similarity with known is tantalising.... c.1300, from Anglo-Fr. renoun, O.Fr. renon, from renomer make famous, from re- repeatedly + nomer to name, from L. nominare to name..
Photosynthesis is the process whereby plants using light energy from the sun convert carbon dioxide and water to glucose sugar and oxygen gas through a series of reactions. The overall equation for photosynthesis is. carbon dioxide + water =light energy=> glucose + oxygen. 6CO2 + 6H2O =light energy=> C6H12O6 + 6O2. Light energy from the sun is converted into chemical energy by the production of glucose molecules. Photosynthesis is carried out in the chloroplasts of plant cells using the green pigment chlorophyll.
The Process of Photosynthesis. 1  Chlorophyll absorbs the sunâs energy. 2  It is this energy that is used to split water molecules into hydrogen and oxygen. 3  Oxygen is released from the leaves into the atmosphere. 4  Hydrogen and carbon dioxide are used to form glucose or food for plants.