4) What impact(s) does overfishing of top predators have on the marine food chain? Citing specific facts from the National Geographic website and your textbook, describe the impact of overfishing of top predators on marine food chains. (2-3 sentences) There are the Sharks, Seals and Tuna. About the Sharks it is caught or farmed in ways that harm other marine life of the environment.
5) How do bluefin tuna and yellowfin tuna compare with regard to their level in marine food chains, sustainability rankings, and toxicity? Record this information in the table below. (No text required; just complete the chart below) |Fish |Level |Sustainability Ranking |Toxicity | |Tuna, bluefin |4 |avoid |no | |Tuna, yellowfin-pole caught |3 |best |no |
6) How do you explain the difference in the sustainability rankings of bluefin and yellowfish tuna? Based on what you have learned from this exercise and Chapter 12, explain why the sustainability ranking of bluefin tuna is lower than the sustainability ranking of yellowfin tuna. (2-4 sentences) I think because bluefin tuna are less than the yellowfin tuna. And yellowfin tuna can breed faster than bluefin and safer.
7) How would an institutions and commons theorist explain overfishing in the tuna industry? Clearly state the fundamental argument of this approach and explain overfishing in the tuna industry, using a minimum of two of the conceptual tools provided by the institutions and commons approach. (3-5 sentences)
8) How does the 2010 BP Gulf Oil Spill compare to the 1989 Exxon Valdez Oil Spill with regard to what caused the spill, the size of the spill, the time required for cleanup, and the socioeconomic and ecological impacts of the spill? Compare/contrast the source, extent, timing, and impacts of the 2010 BP Gulf Oil Spill with that of the 1989 Exxon Valdez Oil Spill. (3-5 sentences) 2010 BP Gulf Oil Spill is more than 1989 Exxon Valdez Oil Spill.
9) Should the Arctic National Wildlife Refuge (ANWR) be opened for commercial oil drilling in the near future? Why or why not? Based on the base group assignments below, argue whether (or not) ANWR should be opened to commercial oil drilling. In your answer, you should clearly state the fundamental position of your assigned actor (pro vs. con) and support your position with a minimum of two of facts (from your outside research!) related to why you actor takes the position they do on this highly debated issue. Pay special attention to the social, cultural, economic and political factors underlying your actor’s position on the issue (4-6 sentences)
Moreover, you should be prepared to discuss your answers with your base group and subsequently debate with your colleagues whether ANWR should be open for drilling. |Base Group # |Actor Assigned | |1 |The Inupiat Eskimos | | |(a local indigenous community) | |2 |The Sierra Club | | |(a non-governmental organization) | |3 |The Gwich’in Indians | | |(a local indigenous community) | |4 |Federal government | |5 |British Petroleum (BP) | | |(a transnational oil company) |
Based on readings and video clips assigned for Short Exercise #2– Exploring Oceans & Energy Issues, answer the questions below. Remember to answer all portions of the question asked and abide by the length requirements specified below! Also, please don’t forget to name your dropbox submission appropriately! Important Reminder: When you find additional sources on the internet, please remember to cite these new sources appropriately! In this class, you should follow the APA Citation Style. Please refer to the library’s summary of the APA standards for how to cite using the APA guidelines: http://www.library.arizona.edu/search/reference/citation-apa.html.
1) What did you learn from “The Tipping Point” video? Summarize this video, highlighting at least two new facts you learned from watching this video. (2-3 sentences) I learn about how the human do with the ocean. Human make lots of chemistry things in the ocean. Those things make lots of problems of ocean.
2) What is a dead zone and how does it form? Define the phrase dead zone and provide a step-by-step explanation of the formation of a dead zone. (3-5 sentences) First the water with nitorgen auto tailpipes flows into the ocean. Second, the plume of nutrient-rich water enter a warm surface layer over denser, colder saltwater. And the layers do not mix. Third, nutrients fuel blooms of microscropic plants.
3) Why is there a dead zone at the mouth of the Mississippi River in the Gulf of Mexico? Outline the reasons for the Gulf of Mexico dead zone, playing specific attention the role of human activities in this coastal issue. (1-2 sentences) I think in the Gulf of Mexico the human active