Fish breathe through gills in the water. Beavers survive in the forest due to their brown color which helps them blend in. Beavers use wood to build dams and lodges, showing behavioral adaptation. Arctic hares change their fur color from brown to white in summer and winter as a physical adaptation. Plants also show adaptations like cacti storing water in their stems and rainforest plants having large leaves to receive sunlight. Animals use behavioral adaptations like hibernation, migration, camouflage and mimicry to survive.