Phase Inspection. 1  Framing: proper technique, boring & notching, wood grade, defective or missing members. 2  Window and door installation and water proofing. 3  Exterior sheathing and vapor barrier is correctly installed. â 4 Plumbing and Electrical inside the walls with correct nail stop shield placement.
Hydrogen is the lightest of the elements and is the most abundant element in the universe. (Also reference http://www.ducksters.com/science/chemistry/hydrogen.php) earth's atmosphere
I did too! and if not for your question, I wouldnt have found out! So Nitrogen is the most abundant gas in our atmosphere. Then oxygen, then carbon dioxide, then other gases. We do inhale/intake mostly Nitrogen but we dont make any use of it so we just exhale it out. Source(s):