The Carbon Cycle

• What is the starting point of the carbon cycle?

  Carbon dioxide in the atmosphere
• How does carbon enter the carbon cycle?

  Through photosynthesis
• What is produced during photosynthesis?

  Glucose
• What role do plants play in the carbon cycle?

  They take in carbon dioxide and release it through respiration
• What is the difference between respiration and breathing?

  Respiration is a cellular process, while breathing is a physical act of inhaling and exhaling.
• What are the two key processes involved in the carbon cycle?

  • Photosynthesis: adds carbon to the cycle
  • Respiration: returns carbon to the atmosphere
• How does carbon move from plants to animals in the carbon cycle?

  Through consumption of plants by animals
• What happens to carbon in animals after they die?

  It is broken down by decomposers and returned to the atmosphere
• What is the role of decomposers in the carbon cycle?

  • Break down dead remains and waste products
  • Return carbon to the atmosphere as carbon dioxide
  • Release mineral ions to the soil
• What conditions can affect the function of decomposers?

  A lack of oxygen
• What can happen to carbon in dead remains under certain conditions?

  It can be converted to fossil fuels.
• What has been the impact of human activity on the carbon cycle in recent years?

  • Burning fossil fuels releases carbon dioxide into the atmosphere
  • Increased carbon dioxide levels contribute to climate change