Opacity (optics) Opacity is the measure of impenetrability to electromagnetic or other kinds of radiation, especially visible light. In radiative transfer, it describes the absorption and scattering of radiation in a medium, such as a plasma, dielectric, shielding material, glass, etc.
Answers.comÂ® is making the world better one answer at a time. during Calvin Benson cycle carbon dioxide from the air is used to produce glucose and other compounds.
The Calvin cycle just adds on all the extra elements required. Having said that, the 'just' is still a fairly major task, requiring different enzymes all working in the correct order. The carbon dioxide molecules diffuse into the cells through small holes in the underside of the leaf.