Organisation

• Human digestive system


  Provides the body with nutrients
• Human respiratory system


  Provides the body with oxygen and removes carbon dioxide
• Digestive and respiratory systems

  Provide dissolved materials that need to be moved quickly around the body in the blood by the circulatory system
• Damage to any of these systems can be debilitating if not fatal
• There has been huge progress in surgical techniques, especially with regard to coronary heart disease
• Many interventions would not be necessary if individuals reduced their risks through improved diet and lifestyle
• Plant's transport system

  Dependent on environmental conditions to ensure that leaf cells are provided with the water and carbon dioxide that they need for photosynthesis