For many plants, the respiration process uses carbon dioxide to produce oxygen through photosynthesis . An instinct is a behavior with which an animal is born. For example, from birth, a puppy instinctively knows to suck milk from its mother. Instincts help animals find food, mate, reproduce, and raise their young. Survival instincts also lead animals to migrate or move to a better habitat.
Some animals migrate only short distances.
Others, like the wildebeest on the African Serengeti, are continually migrating great distances. To find better living conditions. In seasonal habitats, some animals survive the winter by going into deep sleep during which the animal lives off of its stored fat and uses very little energy. This way, the scarcity of sunlight, food, and warmth don't risk the animal's survival. Bears are certainly the best known hibernators, but not the only.