Mateo has a fish in a fish tank. Every day, he feeds the fish flakes of food. He also changes the water as necessary. He has an
aerator that pumps bubbles into the tank. Which sentence shows the fish’s need for air?
Mateo has a fish in a fish tank.
Every day, he feeds the fish flakes of food.
He also changes the water as necessary.
He has an aerator that pumps bubbles into the tank.
The final sentence, It shows that Mateo needs to pump bubbles into the tank, and bubbles are just a gas trapped in a liquid, in this case, air in water. It shows that Mateo's fish needs the bubbles, which means it needs air.
