TOPIC B2 - ORGANISATION

• What is meant by a risk factor for a disease?

  A risk factor is a characteristic or exposure that increases the likelihood of developing a disease.
• What is transpiration?

  Transpiration is the process by which plants release water vapor into the atmosphere through their leaves.
• What are the 4 main things that affect transpiration?

  Humidity, temperature, wind, and light.
• What type of cell helps open and close stomata?

  Guard cells