1. Monday’s graph

2. Tuesday’s Notes on next three slides

6. Thursday’s slides on next 5 slides.

7. Phosphorous stimulates the nitrogen-fixing behavior of the blue-green algae.
Phosphorus is the nutrient most likely to be the limiting factor in eutrophication (the process of a body of water becoming nutrient- rich). You can have a higher nitrate concentration without accelerating eutrophication.

9. Deforestation- The removal of large areas of forests for human purposes. Tropical Rainforest --About 130,000 km2 (size of LA) destroyed each year --Contains about 50% of all the species on Earth

10. Problems caused by deforestation:
Loss of habitat for plants and animals
Soil erosion
More carbon dioxide in the atmosphere (because trees normally remove it).

11. Desertification- the development of desert-like conditions due to human activities and /or climate A region of land that undergoes desertification is no longer useful for food production.