Frozen Arks are like special freezers that can keep things really, really cold. They are used to keep things like plants, animals, and other important objects that need to be kept very cold so they don't spoil or die. Inside a Frozen Ark, things are kept at temperatures that are much colder than anywhere else on Earth and the air never changes. This is to keep things from spoiling or decaying. Frozen Arks are like a time capsule - scientists, governments, and universities use them to store rare and important things for the future.