Science Notes Home Growing Seasons Different biomes have different lengths of growing seasons, that is, periods during the year when the nights are above the freezing temperature of water. When the growing season ends, plants become dormant or scatter seeds and die. Animals also adapt. Some animals hibernate, living on stored fat until the warm weather returns. During hibernation, their metabolisms drop so that they need fewer calories to live.
Some animals migrate, moving to warmer climates where food is available.
Some insects die but leave eggs that will hatch in the spring. Some animals stay active and work harder to find food. Herbivores search for dried grass under the snow. Predators travel greater distances or hunt for longer hours. The cold weather makes them burn more calories to keep warm.