The sixth extinction is like when all the dinosaurs died, but this time it's happening to many different animals and plants all around the world. You know how when you play with your toys, you need to take care of them, or they might break, right? That's what's happening with the animals and plants, too. People are using too much stuff from the environment, and they aren't taking care of the animals or the places where they live. This means that many animals and plants are disappearing, or going extinct.
It's a bit sad because when some animals go extinct, they never come back, and we won't get to see them anymore. Remember how you love seeing different animals at the zoo? Well, some of them might disappear forever. Scientists are studying this problem and trying to find ways to help the animals and plants stay alive. We can all help by taking care of the environment, not littering, and not using things like plastic that are bad for nature.