1. WATER, CARBON, NITROGEN, & PHOSPHOROUS Chemical Cycles

2. Water Cycle 1. Sun 2. Clouds/Condensation 3. Evaporation 4. Precipitation 5. Ocean 6. Where can we draw transpiration? 1. Transpiration is the evaporation of water from plants

3. Carbon Cycle Two Major Processes:  Cellular Respiration:  O2 + Glucose  CO2 + H2O  Photosynthesis:  CO2 + H2O  Glucose + O2

4. Nitrogen Cycle Nitrogen is a major component in protein and DNA Found in water as -ammonia (excreted by aquatic animals) -nitrites (formed by bacteria) -nitrates (formed by bacteria)

5. Phosphorus Cycle Phosphorous is a major component in DNA and ATP Initially comes from weathered rock