Hey kiddo, let's talk about something called hypoxia!
Hypoxia happens when there isn't enough oxygen in a certain environment. So when you take a breath, you usually breathe in some air that has oxygen in it, right? Well, sometimes in certain places, like deep in the ocean or in really high mountains, there isn't enough oxygen in the air.
This can make it really hard for animals and plants that need oxygen to survive. In fact, sometimes when there isn't enough oxygen, animals and plants can start to die!
Scientists are really interested in studying hypoxia because it can affect lots of animals and plants, and that can have a big impact on our environment. So they work hard to find ways to understand it better and make sure that everyone and everything can stay safe and healthy!