ANATOMY

Detailed explanation-1: -nitrogen – 78% oxygen – 17% carbon dioxide – 4% other gases – 1%.

Detailed explanation-2: -Air is composed of 78% nitrogen and 21% oxygen.

Detailed explanation-3: -It’s a mixture of different gases. The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

Detailed explanation-4: -’ Nitrogen makes up 78 per cent of the air we breathe, and it’s thought that most of it was initially trapped in the chunks of primordial rubble that formed the Earth. When they smashed together, they coalesced and their nitrogen content has been seeping out along the molten cracks in the planet’s crust ever since.

Detailed explanation-5: -Gases. The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air.