How do ecosystems maintain balance and biodiversity?

Ecosystems keep things balanced and full of different life by working together like a big, friendly playground.

Think of an ecosystem as a playground where lots of friends, animals, plants, and even tiny bugs, live and play. Each friend has a job to do. For example, plants are like the ones who bring snacks (they make food through sunlight), animals help spread seeds or eat other animals, and bugs might be the ones who clean up after everyone.

When one group is happy and healthy, it helps others stay that way too. But if something changes, maybe a lot of bugs disappear, that can throw things off balance, like when someone takes all the balls from the playground.

Each living thing in an ecosystem has a role. If one group gets too big or too small, it can change how everything else lives. But because everyone helps each other out, they keep the playground, or the ecosystem, fun and full of life!