How Plants Eat Sunlight
A kitchen inside every leaf
Plants cannot go to the shop, so they make their own food right inside their leaves. The recipe needs three ingredients: sunlight, water and a gas from the air called carbon dioxide.
This food-making trick has a big name: photosynthesis. It means "putting together with light".
The green helper
Leaves are packed with a green colouring called chlorophyll. Its job is to catch sunlight, a bit like a tiny solar panel.
Chlorophyll is the reason most leaves look green — it soaks up red and blue light and bounces green light back to your eyes.
Breathing out the good stuff
When a plant makes its food, it gives off oxygen — the very gas that you and I need to breathe.
So every tree, bush and blade of grass is quietly helping to fill the air with fresh oxygen. That is why forests are sometimes called the lungs of the Earth.
💡 Did you know? One large tree can make enough oxygen in a year for two people to breathe. Thank a tree today!
🧪 Try this at home: Tape a small piece of dark paper over part of a leaf on a houseplant (leave the plant in the light). After a few days, peek underneath — that spot will be paler, because it could not catch any sunlight to stay green.