1. What is the difference between a positive and negative feedback loop? Describe and discuss one example of each type of feedback loop that was not discussed in the text or the course lecture.
Your response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.
2. Which of the environmental issues that the text defines as �persistent challenges� do you feel is the most pressing? Discuss your reasoning and outline some of most important steps we should take to solve the problem.
Your response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.
3. Provide a detailed description of one biogeochemical cycle. How do you impact this cycle in your everyday life? What steps could you take to reduce this impact?
Your response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.
Match each term with its definition or the chemical equation that describes its processes.
| A. |
Mobile, high-energy particles created in the light-dependent reactions of photosynthesis
|
| B. |
Hydrocarbon atoms with one or more attached chlorine atoms
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| C. |
6H2O + 6CO2 + solar energy C6H12O6 + 6O2
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| D. |
C6H12O6 + 6O2 6H2O + CO2 + released energy
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| E. |
A unique green molecule that can absorb light energy and use it to create high-energy chemical bonds
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| F. |
Plant organelles in which photosynthesis occurs
Photosynthesis
ATP/NADPH
Chlorophyll
Chloroplasts
Cellular respiration
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