Sci Show Kids Why does some cheese have holes?

Earth Science, Earth Science, Life's big questions
Duration: 4m 3s
Cheese is a great snack! One of the best things about it is that there's so many different kinds: cheddar, mozzarella, provolone, gouda... the list goes on and on! But have you ever wondered why some cheeses, like Swiss, are full of little holes?

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