Unit D: Aerodynamics & Flight 1 — Kurpinski's Class
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What is air made up of, and being invisible and odourless, can it be considered equal to the concept of God? - Quora
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What is air made of? - Donut chart - everviz
Air. What's in air? The atmosphere is made up mostly of nitrogen gas. Oxygen makes up a little more than 20% of the atmosphere. Air Composition. - ppt download
