Soil

1. contamination, unplanned urban development, desertification, salinization, mismanagement and erosioncontamination, unplanned urban development, desertification, salinization, mismanagement and erosion. https://www.soils.org/science-policy/issues/grand-challenges

2. Long Term Outlook

2.1. Humans are polluting it with landfills and if all soil becomes polluted then we won't have clean soil to grow food.

2.2. Most farming methods slowly strips the soil of carbon which is a necessity in soil

3. Challenges

4. Benefits

4.1. Rural Areas

4.1.1. Healthy soil = Healthy food

4.2. Urban Areas

4.2.1. Support for buildings

4.3. Water quality and flow control

4.4. Nutrient cycling

4.5. Maintaining biodiversity

4.6. Filtering and buffering of air and water

5. Timeline

5.1. Timeline of agriculture

5.1.1. Agriculture started in 10,000 B.P. in the Near East.

5.1.2. The soil is more depleted now because there is not as much carbon in the soil.

5.1.3. Agriculture started in the Eastern U.S. in 4500 B.P.

6. Location

6.1. Soil is located everywhere except in water.