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How Do Trees Grow Without Holes? Photosynthesis, Fungi & Root Empires Explained

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まなびクマまなびクマ初心者 2026/5/2 作成 2026/6/1 更新
Why Are There No Holes Around Trees?
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Kurzgesagt – In a NutshellWhy Are There No Holes Around Trees?📅 2026年1月7日 公開

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The Heavyweight Champion of Thin Air

How Do Trees Grow Without Holes? Photosynthesis, Fungi & Root Empires Explained - 導入 イラスト

Trees are the true giants of our world. Imagine something weighing as much as ten massive blue whales standing tall in your backyard. You might think they eat the soil to get that big, but it is much more magical than that, you know?

If trees actually ate the ground, every forest would be sitting in a giant pit. In fact, if something that heavy ate the dirt below it, there would be massive holes everywhere. But the ground stays level because trees are doing something totally different.

💡Mana Bear Insight: Trees are actually built out of the wind and the sky, not just the dirt under their feet.

Trees are literally building themselves out of thin air by catching carbon. Carbon is like a chemical multi-tool that living things use to make almost everything. A tree takes this invisible gas and turns it into solid, heavy wood.

However, the atmosphere only contains a tiny bit of carbon dioxide. To build just one ton of wood, a tree has to process five million cubic meters of air! That is like a giant vacuum cleaner working non-stop for decades to gather its food.

Trees are the ultimate masters of recycling the sky into solid life. It is a slow-motion miracle that happens right before our eyes every single day. Therefore, when you look at a tree, you are looking at captured sunshine and wind.

This process makes plants the basis for all complex life on our planet. Every animal you see either eats plants or eats things that eat plants to get their carbon. They are the great providers for everyone, you know?

The Big Secret: Trees do not grow from the ground up; they mostly grow from the sky down!

Millions of Tiny Mouths at Work

How Do Trees Grow Without Holes? Photosynthesis, Fungi & Root Empires Explained - 本論 イラスト

Every leaf is a high-tech factory cell optimized for one thing: catching light. These leaves are thinner than your skin but packed with tiny machines. They stay thin so the sun can reach every single layer inside.

But these factories need more than just light to run. They need a constant stream of water and minerals moving up from the roots. This movement is powered by billions of tiny mouths called stomata on the bottom of the leaf.

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