1. Biogeochemical Cycles
Human impact on the World

2. Transpiration => the water taken up through the plants roots is released through the stomata
Condensation => water in gas forms cools back into liquid (water vapor)
Runoff => path water takes from the mountains to a body of water
Percolation => water seeping into the ground
Precipitation => falling out. Water in any form falling to the earth.

3. Nitrogen Nitrogen is another element crucial to life on Earth.
Organisms require nitrogen for organic compounds such as protein, chlorophyll, and nucleic acids.
Nitrogen makes up about 78% of the air and 48% of the gases dissolved in seawater.

4. Carbon Cycle Increase in burning of fossil fuels (ex: oil)
Increase in deforestation
Results in increase in excess carbon dioxide production

5. Increase in Carbon Dioxide
Amount of carbon dioxide influences the amount of heat trapped in the atmosphere
Greenhouse effect
Increase in global temperature

6. Greenhouse Effect

7. Ozone Layer Ozone (O3): three oxygen atoms combined
Naturally occurring gas
Located in the upper atmosphere
Blocks out ultraviolet radiation

8. CFCs CFCs: chlorofluorocarbons
Found in refrigerators, air conditioners, and aerosols
Acts as a catalyst to breakdown ozone molecules much faster
1 CFC molecule: 100,000 ozone molecules
Hole over Antarctica

11. CFCs and Ozone
Increase in CFCs in the atmosphere has led to the thinning of the ozone layer
Thinner ozone layer allows more ultraviolet radiation