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Bell Ringer

Bell Ringer. Give two reasons that the frogs could be going extinct?. Yesterday we discussed………………… Today we are discussing What is the value of the wolf?. I can describe how humans impact the carbon cycle. I can explain how the burning of fossil fuels affects the carbon cycle.

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Bell Ringer

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  1. Bell Ringer Give two reasons that the frogs could be going extinct?

  2. Yesterday we discussed………………… • Today we are discussing What is the value of the wolf?

  3. I can describe how humans impact the carbon cycle. • I can explain how the burning of fossil fuels affects the carbon cycle.

  4. The Carbon Cycle and the Human Impact” How do humans impact the carbon cycle? Page 56-58 Science IV

  5. Hand out page 56-59 The Carbon Cycle

  6. Carbon is………….. • Carbon is the key element for living things. • Carbon can be found in the atmosphere • Carbon can be found dissolved in the oceans primary in the form of CO2 • 50-70 billion tons of Carbon from inorganic carbon dioxide are recycled into more complex organic substances.

  7. “Carbon Cycle” Read ( I will allow a few minutes)

  8. Why do you think that photosynthesis and respiration are considered to be complementary processes? (on paper)

  9. Explain how burning if fossil fuels by humans affect the carbon cycle.

  10. 3. • Scientist have expressed concerns about the burning of the rainforests to clear land for farming. • A. Explain how the burning of the forests could change oxygen levels in the atmosphere. • B. What impact would the change in oxygen levels have on living things? • C. How would the change affect the ecosystem of the rainforest?

  11. Homework from Yesterday!Please copy down! • Explain why the life cycle and skin of the frog make it a good indicator animal if you want to determine the health of local ecosystems. • B. Construct a concept web (graphic organizer) that links the decline in the number of frogs to the factors that may cause the decline. • C. Choose one of the possible causes and , using your own words, explain how it affects the frogs.

  12. Homework due 11-16-09 • “Homework” What is the value of the wolves”? pages 18-19 Prepare a written position: Should wolves have been captured in Canada and shipped to Yellowstone national Park? You will choose to support/or develop an alternative view: • Use the library, the web, to find information that will support your position and write a 2-3 page typed report on the results of your research.

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