REGULATION OF INTERNAL ENVIRONMENT (HOMEOSTASIS) ENDOCRINE GLAND THE SKIN THE SPINAL CORD REFLEX AND VOLUNTARY ACTIONS ECOLOGY OF POPULATION TERRITORIAL BEHAVIOUR IN ORGANISMS FAMILY PLANNING DEVELOPMENT OF NEW SEEDS REPRODUCTION BEHAVIOUR IN ANIMALS Regulation of Internal Environment (Homeostasis) Biology SS 3 First Term  Week: 1 Topic: Regulation of Internal Environment (Homeostasis) Introduction Homeostasis is defined as...