Like Moving from a Pool to a Playground
Imagine you're used to swimming in a pool, but one day you step out of the water and find yourself on a sandy beach. That’s what it was like for early land creatures. They were used to living in water, where they could float and swim, kind of like how you float in a pool.
But some of them wanted to see more of the world, so they started spending more time on the shore. Over many years, their bodies changed, they grew stronger legs to walk on land, and their skin got better at keeping water inside, like a little waterproof coat.
A Big Adventure
Soon enough, these early creatures could live fully on land, just like how you can run around on the playground instead of staying in the pool. And that’s how life started to spread from water to land, one step at a time!
Examples
- A fish climbs out of the water to live on a rock.
- Plants grow from the ocean onto the shore.
- An animal starts walking instead of swimming.
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See also
- Why haven’t particular traits that one might consider advantageous to an organism?
- How Chilis Got Spicy (and Why We Love the Burn)?
- how bruce the half beak kea weaponised his disability to become the alpha bird?
- What is 5 fingers?
- How come large herbivores have such thin legs?