Biogeochemical Cycles Human impact on the World

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.

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.

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

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

Greenhouse Effect

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

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

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