1. Chapter 3: Ecology 3-3: Cycles of Matter

2. Recycling in the Biosphere  Matter is recycled within and between ecosystems  Biogeochemical Cycles – cycles that connect BIOlogical, GEOlogical, and CHEMical aspects of the biosphere

3. The Water Cycle  Water enters the atmosphere by 2 ways: Evaporation – water changes from liquid to gas Evaporation – water changes from liquid to gas Water evaporates from bodies of water (ocean, lake, etc.)Water evaporates from bodies of water (ocean, lake, etc.) Transpiration – water evaporating from the leaves of plants Transpiration – water evaporating from the leaves of plants

5. Nutrient Cycles  Nutrients – chemical substances that an organism needs to sustain life They build tissue and carry out essential life functions They build tissue and carry out essential life functions Ex: Ex: Humans drink milkHumans drink milk Milk contains calciumMilk contains calcium Calcium is needed to grow strong bonesCalcium is needed to grow strong bones

6. Carbon Cycle  4 main types of processes that moves carbon (C) through its cycle Biological ProcessesMixed Biogeochemical Processes Photosynthesis (removes C)Burial/decomposition of organisms produce coal and petroleum (fossil fuels) when under pressure (releases C) Respiration (releases C) Decomposition (releases C) Geochemical ProcessesHuman Activities Erosion (releases C)Mining (releases C) Volcanic Activity (releases C)Cutting/Burning Trees (releases C) Burning Fossil Fuels (releases C)

7. Carbon Cycle

8. Nitrogen Cycle

9. Phosphorous Cycle