What is CO₂ concentration?

CO₂ concentration is how much carbon dioxide is in the air around us, like how many marshmallows are in a big bowl of cereal.

Imagine you're in a room with your friends, and everyone starts to blow bubbles, that's like carbon dioxide being added to the air. Now imagine the room gets more crowded with every bubble, that’s what happens when there’s a higher CO₂ concentration.

Think of the air as a big balloon. When you blow into it, it gets bigger and tighter, just like our atmosphere when we add more CO₂. This can make things warmer, kind of like how your face feels when you're outside on a hot day.

Every time we drive cars or turn on lights, we’re adding more bubbles (CO₂) to the air. Scientists measure these bubbles using special tools that count them, it’s like counting marshmallows in a big bowl!

So, CO₂ concentration is just the number of carbon dioxide bubbles in our atmosphere, and it's getting bigger every day.