Where do trees get their mass from? Veritasium explains


Derek Muller, from Veritasium, explains where do tree get their mass from. It is mostly water and air, more specifically carbon dioxide. If the trees would eat up the earth beneath their roots, then there would be a whole where every tree stands.

The trees need only some vitamins and minerals form the earth, but their leaves, through photosynthesis, take water and carbon dioxide and then turn it into glucose, which is then converted in different substances and among them, into cellulose, the fiber a tree is composed of.

Interestingly, the leaves reflect green and yellow light and only the red and blue light is able to help with the photosynthesis process. Thanks red and blue, we owe you.

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