Chapter 5: Photosynthesis and Climate Change

1. Describe the anthropogenic causes of climate change.

   • water vapor

   • C02

   • Methane

   • Ozone

   • combustion of coal, oil, and natural gas

2. Describe the greenhouse effect.

   • greenhouse gases trap the energy from the sun

3. Explain why water is slow to change temperature.

   • hydrogen bonds are cohesive and “stick together”

4. Compare and contrast the water cycle and carbon cycle.

   • water cycle involves changes of state

     • liquid, gas, solid

   • carbon cycle is a biogeochemical cycle involving chemical changes and exchanges of carbon in various forms, such as carbon dioxide and organic compounds

     • living organisms

     • atmosphere

     • bodies of water

     • rock

5. Discuss the origin of fossil fuels and their relationship to the carbon cycle.

   • Produced from unconsumed carbohydrates of ancient, buried organisms

   • Transformed by heat and pressure

   • Examples:

     • Petroleum

     • Coal

     • Natural gas

6. State the basic equation of photosynthesis.

           H20+C02+Light→Glucose(C6H12O6)+O2

1. Describe the light reactions of photosynthesis.

2. Explain the events that occur during the light-independent reactions, and describe the relationship

3. between the light reactions and the light-independent reactions.

4. Explain the role of stomata in balancing photosynthesis and water loss.

5. Define photorespiration and explain why this process is detrimental to plants.

6. Discuss how our own activities contribute to or reduce the risk of global climate change.