Frozen zoo

A frozen zoo is a place where scientists put tiny cells taken from animals, like elephants and tigers, in special containers filled with liquid nitrogen. This helps keep the cells alive so scientists can use them to see how that particular animal grows or even how it can be used to make more animals of that kind. In short, frozen zoos are like a type of time capsule for animals, known as "cryopreservation," that helps scientists preserve them for the future.