carbon dioxide dude. =)
Plants need carbon dioxide in order to make their own food.
Plants need carbon dioxide gas to perform photosynthesis and make food.
Carbon Dioxide
carbon dioxide
CO2
Carbon dioxide gas.
carbon dioxide
Plants make oxygen when they use light and carbon dioxide to make food for themselves.
Plants add oxygen to the atmosphere during photosynthesis or food making.
carbon dioxide used by plants in photosynthesis
Carbon dioxide
Nitrogen is needed for good plant growth and helps them make proteins.