study guide #1

1. evaporation

2. transport

3. Condensation

4. Precipitation

5. Groundwater

6. Run-off

1. plants remove carbon dioxide from air

2. plants die, they bury in earth

3. millions years past by, remains turn to coal and oil

4. people mine for fuels, then we burn them.

5. we send carbon dioxide and other greenhouse gasses up in air

1. Nitrogen fixation

2. Nitrification

3. Assimilation

4. Ammonofication

5. Denitrification