Oxygen: Human and animals need it to breath., 21% of the air, come out from the plants , Carbon dioxide : Plants need it in photosynthesis to make food, 1% of the air, come out from breathing and from burning, Nitrogen: Plants take it from soil , 78%,

Air composition

Rangliste

Visuel stil

Indstillinger

Skift skabelon

Gendan automatisk gemt: ?