Curtain Walls. Curtain wall systems clad a building envelope with glass and aluminum to protect the interior from the elements and creates a safe and comfortable work environment for the building occupants. Curtain walls are designed to only carry their own weight.
A. PHOTOSYNTHESIS Photosynthesis n: A process by which green plants and other organisms produce simple carbohydrates from carbon dioxide and hydrogen, using energy that chlorophyll or other organic cellular pigments absorb from radiant sources.
The plant must create its own energy in order to survive. Photosynthesis is the process by which new lease of energy is made available to the plant. For photosynthesis, plants need light, water, carbon dioxide and chlorophyll. The chlorophyll converts water from soil and carbon dioxide from air into oxygen and sugar in the presence of sunlight.