10.3 · Air quality and climateLesson 1 of 11Free preview
The composition of clean air
Clean dry air is about 78% nitrogen and 21% oxygen; the last 1% is noble gases and carbon dioxide.
10.3 · Air quality and climateLesson 1 of 11Free preview
Clean dry air is about 78% nitrogen and 21% oxygen; the last 1% is noble gases and carbon dioxide.