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Cycling of Matter. Cycles in the Biosphere. Energy is transformed into usable forms to support the functions of the ecosystems Law of Conservation of Mass : matter is not created or destroyed, it only changes form Matter : anything that takes up space and has mass

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Cycling of Matter

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cycles in the biosphere
Cycles in the Biosphere
  • Energy is transformed into usable forms to support the functions of the ecosystems
  • Law of Conservation of Mass: matter is not created or destroyed, it only changes form
  • Matter: anything that takes up space and has mass
  • Nutrients: a chemical substance that an organism must obtain to sustain life
biogeochemical cycle
Biogeochemical Cycle
  • Exchange of matter through the biosphere
  • Involves living organisms (bio), geological process (geo), and chemical process (chemical)
water cycle
Water Cycle
  • Water has been found underground, in the atmosphere, and on the Earth’s surface in lakes, streams, rivers, glaciers, ice caps and oceans
water cycle1
Water Cycle
  • Water is constantly evaporating from the Earth’s surface into the atmosphere (into water vapor)
  • Water vapor rises and cools, forms clouds
  • Water falls from the clouds in the form of precipitation (rain, sleet, snow, hail)
  • 90% of water vapor comes from surface water, 10% from plants
water cycle2
Water Cycle
  • 3 Processes in the Water Cycle
    • Evaporation
    • Condensation
    • Precipatation
water cycle3
Water Cycle

carbon and oxygen cycle
Carbon and Oxygen Cycle
  • Carbon and Oxygen are both necessary for life processes
  • Photosynthesis: plants convert Carbon Dioxide to Oxygen
  • Respiration: animals take in oxygen and give off carbon dioxide
  • Carbon enters a long-term cycle when organic matter is buried and turns into peat, coal, oil or gas deposits
carbon and oxygen cycle1
Carbon and Oxygen Cycle

nitrogen cycle
Nitrogen Cycle
  • Nitrogen is an element found in proteins
  • Most nitrogen is found in the atmosphere
  • Nitrogen gas is captured from the air by bacteria in the soil or water
  • Nitrogen Fixation: process of capturing and convertingnitrogen into a form that can be used by plants
nitrogen cycle1
Nitrogen Cycle
  • Nitrogen enters the food web when plants absorb nitrogen from the soil and convert it into proteins
  • Consumers get nitrogen from eating plants or animals containing nitrogen
nitrogen cycle2
Nitrogen Cycle

phosphorus cycle
Phosphorus Cycle
  • Essential to growth and development of organisms
  • Short-term Cycle and Long-term Cycle
  • Short-Term: cycles from soil to producers to consumers, decomposers return phosphorus to soil from dead organisms
  • Long-Term: weathering and erosion of rocks containing phosphorus add it to the cycle
phosphorus cycle1
Phosphorus Cycle