Do now activity 6 Based on the food chain where does grass get its energy from How Based on the food chain how much energy do cows receive Based on the food chain how much energy do humans receive ID: 774137
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Do now activity #6 Based on the food chain, where does grass get its energy from? How?Based on the food chain, how much energy do cows receive? Based on the food chain, how much energy do humans receive? How much energy is transferred between trophic levels? What happens to the rest of the energy?
Section 7-4: Cycles of matterEssential Question: Pick 1 Cycle of Matter. Explain how it works from beginning to end. Learning Target Create a flow map that demonstrates the movement of carbon through an ecosystem.
announcements Available Extra Credit:Starburst Original Jellybeans = 30 Points Stauffer’s Original Animal Crackers = 30 Points
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Cycles of matter Biological systems do not use up matter, they transform it!
Cycles of matter Matter passes from one organism to another.
Cycles of matter Four main biogeochemical cycles: The water (H2O) cycle The carbon (C) cycle The nitrogen (N) cycle The Phosphorus (P) cycle
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The water cycle
The water cycle Evaporation – H 2 O changes from liquid to a gas Transpiration – H 2 O that is released from plants (stomata)
The water cycle Condensation: H 2 O vapor turns into a liquid
The water cycle Precipitation – H 2 O changes from gas to a liquid (rain, snow)
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Atmosphere is 78% N 2 (gas) The nitrogen cycle
Bacteria has to change N 2 (gas) into nitrate so plants can use it The nitrogen cycle
When dead organisms, urine, & feces are broken down by decomposers it causes denitrification The nitrogen cycle
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The phosphorus cycle Phosphorus is necessary for organisms (ATP/DNA/RNA)
The phosphorus cycle Stored mostly in rocks, soil and ocean sediment.
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The carbon cycle
Carbon Dioxide Production: Cellular respiration Decomposers Human influence (fossil fuels) The carbon cycle
Carbon Dioxide Usage: Photosynthesis! The carbon cycle
The carbon cycle
The nutrient cycles Please complete the Cycles of Matter Worksheet. For more information, these cycles can be found in your book:Water (H2O): Page 75Carbon (C): Page 77Nitrogen (N): Page 78Phosphorous (P): Page: 79