A vivarium is like a special house where people keep animals or plants. It's kind of like a zoo or a garden, but much, much smaller. Think of it like a tiny world that you create for your pets or plants to live in.
Inside the vivarium, there are usually all kinds of things to help the animals or plants live happily. For example, there might be lots of soil for plants to grow in, or little tunnels or hiding spots for animals to play in.
Vivariums can have different kinds of animals or plants, like frogs, lizards, or even little bugs! Sometimes, people make the vivarium look like a particular environment, like a forest or a desert. This helps the animals or plants feel like they're in their natural home.
People love vivariums because they're fun to make and explore. They can be big or small, and they're a great way to learn about different kinds of animals and plants. Plus, getting to watch your pets and plants grow and thrive in their own little world is really rewarding!