Bell Ringer Give two reasons that the frogs could be going extinct?
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Transcript of Bell Ringer Give two reasons that the frogs could be going extinct?
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.
• The Carbon Cycle and the Human Impact” How do humans impact the carbon cycle? Page 56-58 Science IV
• Hand out page 56-59 The Carbon Cycle
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.
• “Carbon Cycle” Read ( I will allow a few minutes)
• Why do you think that photosynthesis and respiration are considered to be complementary processes? (on paper)
• Explain how burning if fossil fuels by humans affect the carbon cycle.
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?
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.
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.