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.
Photosynthesis is the process that allows plants to take energy from the Sun and create sugar molecules. As with all of biology, there are exceptions to the rule and you will learn that not all plants survive through photosynthesis. Some plant species are parasites.