Steps down from door to main deck and more down to ground level. For a free-standing deck, consider painting the risers a light color, while the decking boards and treads are stained or painted a darker shade.
Human Body Ingredients via imaginaryfoundation: 'The average human has approximately 100 trillion cells and each cell is made of approximately 100 trillion atoms, each of which were originally created in the center of a star.' Here it is by mass: http:/
Skeletal Formulae of organic molecules are a useful concise way to describe the molecular structure of orhanic molecules. This page includes names and examples of different skeletal structures of organic molecules.