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- Identify a company in your local area that you would classify as a monopoly. Explain why you classified the company as a monopoly, and state how the company relates to at least two characteristics of that particular market.
- From the e-Activity article, explain your position on whether or not Apple is stifling competition and monopolizing the tablet market. Examine the type of market structure within which Apple operates. Support your answer by relating to each of the characteristics described in Chapter 8 of your textbook.
- Read the article titled “Aging US Power Grid Blacks Out More Than Any Other Developed Nation” under the Smart Grid terms section of the Science Corner. You can also view the article at http://www.ibtimes.com/aging-us-power-grid-blacks-out-more-any-other-developed-nation-1631086. Next, assess the efficiency of the current state of the national electric grid in the United States. Then, describe the key challenges in updating this grid to a so-called “smart grid”.
- Read the article titled “Earth's Inconstant Magnetic Field” under the Earth’s Magnetic Field terms section of the Science Corner. You can also view the article at http://www.nasa.gov/vision/earth/lookingatearth/29dec_magneticfield.html. Next, summarize the main reasons why the researchers stated that “our planet's magnetic field is in a constant state of change”. Then, discuss the overall manner in which a magnetic reversal might impact human activities on Earth. Include one (1) example of such impact to support your response.
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Soils exist, so don’t need to be formed from scratch, but there is no guarantee that the ecosystem that replaces the old on will be of the same type that was disturbed.Clearcutting is a logging practice where a whole area of trees is cut at the same time, and often replanted with a monoculture of new trees. This is a very efficient, but highly controversial logging practice, so let’s take a look at some of the impacts and controversy around this practice.A very powerful tool used to study forest health is satellite imagery and remote sensing. One very cool thing about these sensors is that they can see types of light human eyes cannot. Near Infrared light is not visible to human eyes, but plants give off a ton of it when they are making food with photosynthesis. You can read more here:Reflected Near-Infrared Waves, NASA: https://science.nasa.gov/ems/08_nearinfraredwavesThe two images below are of forest clearcutting in Washington State using reflected near-infrared light. 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The picture on Google Earth is different, because it shows the area in visible light, instead of near IR light like the previous images. Areas here with healthier forests are darker green, and the more brown, the less vegetation.7. Describe what you see in the Google Earth image forest cover compared to the images from 1984 and 2010. How have things changed? What looks the same? Make sure to talk about both regrowth areas and unlogged areas.Pros and consPlease explore these two websites about clearcutting. The first is from a logging advocacy group, and is very pro-clearcutting. The second is from a non-profit that is trying to end the practice.Oregon Forest Resources Institute: https://oregonforests.org/clearcutting (链接到外部网站。)链接到外部网站。Stop Clearcutting California: https://www.stopclearcuttingca.org/about-clearcutting/what-is-clearcutting/ (链接到外部网站。)链接到外部网站。 (make sure to look at the different sections, you can see the table of contents to the right. You must look at the first page, and “What’s wrong with it?”.)Please answer the following questions:8. After looking through the material, briefly list some pros and cons to clearcutting.9. You have the means to try and settle part of the argument over clearcutting. Select one of the concerns people have about clearcutting, and design a way to test if the concern is accurate or not. Please do some research of real methods scientists use to collect this kind of data, and cite your sources.Invasive Species: Zebra MusselsOne of the concerns about man made disturbance is that it provides opportunities for invasive species to take over an ecosystem. An invasive species is a non-native lifeform that moves into an area and causes damage to the area’s diversity and overall health. Invasive species can be a very serious problem. We will look at one of these species that has cause both economic and ecological harm in the US, the Zebra Mussel. Please watch this short video about zebra mussels and their impact on lakes in the US:"Silent Invaders" Zebra Mussels 2013 (链接到外部网站。)链接到外部网站。Use the graph below to answer the following questions:Densities of zebra mussels and unionid mussels are given in number per square meter, averaged over the freshwater tidal Hudson (RKM 99-248); data collected in August for zebra mussels and July for unionids. Scientists began collected unionid data in 1991. One meter squared equals ten square feet.Source of both graphs: Michelle Smith, Zebra Mussel Graphing Exercise, BIO 124 Lab, Windward Community College. Accessed 3/4/2019, https://windward.hawaii.edu/facstaff/miliefsky-m/B...10. When were the zebra mussels introduced to the Hudson river?11. Record the density of zebra mussels and unionid mussels for the following years: 1992, 1997, 2004. Please note: The density for zebra mussels is labeled on the left, and the unionids is on the right side of the graph.12. 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