Key Terms

• What is afforestation?


  Planting trees to increase the area of forest
• What is albedo? 


  A measure of the reflectivity of a surface. More reflective surfaces have high albedos. A surface that reflects all light has an albedo of 100% while one that absorbs all light has an albedo of 0%. the albedo of an area can affect the local climate.
• What is anaerobic digestion?


  Composting.