Essay_Key_Exam_2 - Bio9 Fall 2007 Essay Key Exam 2 Due to...

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Bio9 Fall 2007 Essay Key Exam 2 Due to several instances of cheating on Exam 1, it took me much longer to finish grading. It’s happened again for Exam 2. When this happens, we all suffer. It’s time-consuming and unpleasant. For the next exams, if I even see a hint of copying, you will receive a zero for the entire class. One critical mistake students make is not realizing the importance of being able to use your own words to answer questions. When someone asks you about a problem or solution, will you run to a book and read it to them? More significantly for you, do you know that passing off others’ exact words and ideas as your own is plagiarism (theft), punishable by law or in the case of students, expulsion from school? I state this very clearly in my instructions. Luckily, you are not a class of science majors, and I only will give you a zero for stolen work. Do yourself a favor and do not copy from fellow students, the text, the web, or any other source. 1. What is the current population of the world? 1 point ~6.5 -6.64 billion 2. What is its current growth rate? 1 point 1.167% currently, and going down with each year: 1.14% in 2007, 1.25% in 2004. If you gave an older, less precise figure without citing the year, I did not give credit. If you used the rounded figure “1.2%”, but did not cite the year, you received half credit. Even a tenth of 1% equals a huge difference in population growth. Do the calculation…) 3. If a country has a growth rate of 1.7 %, how long will it take for its population to double? (Show calculation) 1 point rule of 70 => 70/1.7 = 41 years 4. What spectacular biome (considered a complex zonation) is known as “islands of biodiversity”? 1 point Mountains 5. List the top 3 areas of greatest marine biodiversity. 3 points Coral reefs, estuaries, deep-sea floor - p. 179. NOT open ocean. Remember Net Primary Productivity from Unit 1? In Figure 3-20, compare “open ocean” with “estuaries”! And of course, the “zones of the ocean” wouldn’t make sense as an answer to this biodiversity question. 6. Name 6 things you and others can do to help sustain terrestrial biodiversity? Be specific to the issue. 3 points Fig. 8-27
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For questions 6 and 8: #6 and #8 emphasize how reducing demand is the quickest, cheapest, most natural way of preventing problems like extinction and biodiversity loss. Don’t buy anything from the wild. *****I gave partial credit for other ideas if you showed relevance to this particular issue. ***** Good student answer: To help sustain biodiversity of the earth's lands I can plant trees, use only recycled paper to prevent the cutting of more trees, recycle my paper to cut down on waste and to provide paper to be recycled and reused, (when I do have to buy something new and made of wood or paper products) only buy products from trees that were grown and harvested sustainably, nurture trees and plant new ones, live in the city instead of the new suburban developments (because sprawling suburbs destroy more and more habitat),
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This note was uploaded on 09/18/2009 for the course BIO 120 taught by Professor Staff during the Fall '07 term at USC.

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Essay_Key_Exam_2 - Bio9 Fall 2007 Essay Key Exam 2 Due to...

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