Cycles of Matter.

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Presentation transcript:

Cycles of Matter

Recycling Matter Energy cannot be recycled but decreases as it is passed through the ecosystem. Matter is continually recycled in a system. Cycles of Matter Water Carbon & Oxygen Nitrogen

Water Cycle Continuous process by which water moves from Earth’s surface to the atmosphere and back. Includes Evaporation (Liquid Gas Vapor) Condensation (Gas Vapor  Liquid) Precipitation (Liquid falls from clouds)

Carbon & Oxygen Cycle Photosynthesis Producers use carbon dioxide and sunlight to produce glucose (sugar). Uses carbon dioxide, releases oxygen Respiration Consumers break down glucose to release energy and carbon dioxide Uses oxygen, releases carbon dioxide 6CO2 + 6H2O + sunlight & chlorophyll C6H12O6 + 6O2 6O2 + C6H12O6 --> 6H2O + 6CO2 + energy

Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Plant takes in carbon dioxide. Animal eats sugar molecule. Animal releases carbon dioxide into the air.

Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Plant takes in carbon dioxide. Animal eats sugar molecule. Animal releases carbon dioxide into the air.

Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Plant takes in carbon dioxide. Animal eats sugar molecule. Animal releases carbon dioxide into the air.

Carbon & Oxygen Cycle Plant uses carbon dioxide to make sugar molecules. Plant takes in carbon dioxide. Animal eats sugar molecule. Animal releases carbon dioxide into the air.

Carbon & Oxygen Cycle Figure 3-13 The Carbon Cycle Section 3-3 CO2 in Atmosphere CO2 in Ocean

Nitrogen Cycle Nitrogen Gas (Free nitrogen) Nitrogen Fixation Most common form of nitrogen. Cannot be used by organisms like us that need nitrogen Must be converted into usable form. Nitrogen Fixation Process of changing nitrogen gas from the air into nitrogen compounds plants can use. Performed by bacteria (some live in roots of plants—called nodules) Fixed Nitrogen Used by organisms to build proteins Decomposers Break down proteins into nitrogen compounds in soil. Bacteria further break down nitrogen into nitrogen gas

Nitrogen Cycle

Nitrogen Cycle

Nitrogen Cycle

Nitrogen Cycle

Nitrogen Cycle

Nodules

Nitrogen Cycle Figure 3-14 The Nitrogen Cycle NO3- and NO2- NH3 Section 3-3 N2 in Atmosphere NO3- and NO2- NH3

Summary Questions Name and define the three major processes that occur during the water cycle. Explain the role of plants in the carbon cycle. Why is nitrogen fixation a necessary part of the nitrogen cycle? Where do nitrogen-fixing bacteria live? Explain how the movement of matter through an ecosystem is different from the movement of energy through an ecosystem.