Chapter 54 Essay Example for Free

Chapter 54 Essay Chapter 54: Community Ecology Concept 54.1 Community interactions are classified by whether they help, harm, or have no effect on the species involved. 1.What is a community? List six organisms that would be found in your schoolyard community. 2.This section will look at interspecific interactions. Be clear on the meaning of the prefix! To begin, distinguish between intraspecific competition and interspecific competition. Give an example of each. Type of Competition Explanation Example Intraspecific competition Interspecific competition 3.What is G. F. Gause’s competitive exclusion principle? Give one example. 4.Define ecological niche. 5.Several species of Anolis lizards live in the same types of trees and have a similar diet. Discuss resource partitioning to explain how interspecific competition is reduced. (Study Figure 54.2.) 6.What is the difference between the fundamental niche and the realized niche? 7. Study Figure 54.5, and then explain what is meant by character displacement. (To do this, you will have to learn or review the difference between sympatric populations and allopatric populations. You will find this information in Chapter 24.) 8.Predation is a term that you probably already know. Can you give examples of some predator-prey combinations as listed below? Predator Prey Animal Animal Animal Plant Fungus Animal Bacteria Animal Fungus Example Plant 9.List three special adaptations that predator species possess for obtaining food. 10.List three ways prey species elude predators. 11.Compare the two types of mimicry. Type of Mimicry Batesian MÃ ¼llerian Description Example 12.What is herbivory? 13.Did you list any special herbivore adaptations for predation in your response to question 9? Or plant adaptations to avoid herbivory? List two adaptations for each category here. 14.Describe and give an example of each of the following interactions: Type of Interaction Description Example symbiosis parasitism commensalism mutualism 15.Which category above includes the other three? Note that other texts may define this term more narrowly. 16.Your text uses +/– symbols to indicate how interspecific interactions affect survival and reproduction of the two species. Use this notation for each of these interactions. Type of Interaction predation commensalism mutualism parasitism interspecific competition herbivory +/+, +/–, –/–, +/0 17.What is species diversity? What are its two components? Why is it important? 18.What does an ecologist summarize in a food web? 19.Know the levels of trophic structure in food chains. Give a food chain here, including four links that might be found in a prairie community, and tell the level for each organism. 20.Name every organism in the pictured food chain, and give the trophic level in the box. 21.According to the energetic hypothesis, why are food chains limited in length? How much energy is typically transferred to each higher level? 22.What is a dominant species? For the area where you live, what would be considered a dominant tree species? 24.Name one keystone species, and explain the effect its removal has on the ecosystem. 25.Explain facilitator or foundation species and give an example. You may omit bottom-up and top-down controls. Concept 54.3- Disturbance influences species diversity and composition 26. What is the intermediate disturbance hypothesis? Give an example of a disturbance event, and explain the effect it has on the community. 27.Ecological succession is the changes in species that occupy an area after a disturbance. What is the difference between primary succession and secondary succession? Concept 54.4 Biogeographic factors affect community biodiversity 28. Explain latitudinal gradients in terms of species richness. Where is species richness greatest? 29.There are probably two key factors in latitudinal gradients. List and explain both here, and put a star next to the one that is probably the primary cause of the latitudinal difference in biodiversity. 30.Explain what is demonstrated by a species-area curve. 31.Renowned American ecologists Robert MacArthur and E. O. Wilson developed a model of island biogeography. While the model can be demonstrated with islands, any isolated habitat represents an island. What are the two factors that determine the number of species on the island? 32.What two physical features of the island affect immigration and extinction rates? 33.Why do small islands have lower immigration rates? Higher extinction rates? 34.Closer islands have 35.What is the island equilibrium model? 36.Use this model to describe how an island’s size and distance from the mainland affect the island’s species richness. extinction rates and immigration rates. Concept 54.4 Community ecology is useful for understanding pathogen life cycles and controlling human disease 37.Let’s pull a couple of ideas from this section: What is a pathogen? 38.What is a zoonotic pathogen? List three examples. 39.What is a vector? List three examples.

Thomas Edison Essay example -- History Biography

I decided to do my report on Thomas Alva Edison because he brought a lot of things into our world. He invented the light bulb, the alkaline battery, the phonograph, and many other things. Many of our modern electronics origins came from Thomas A. Edison. I thought he was very interesting. That is why I chose him. Thomas Alva Edison was born in Milan, Ohio, on February 11, 1847, and lived with his middle class parents, Samuel Edison (his father) and Nancy Edison (his mother). Surprisingly, the young boy did not even talk until he was four years old. In 1854, at age seven, Tom and his parents moved to Port Huron, Michigan. There, near the beginning of the year in a noisy schoolhouse with 38 other kids, his teacher lost his patience with Tom's behavior and endless questions. So, his mother pulled him out of school and home taught him very well, for she used to be a teacher. But, Tom's parents were not educated enough to home teach Tom, for his growing interest in things dealing with physics found his parents stumped. Luckily, his parents had enough money to hire a tutor. By age twelve, he had persuaded his parents to let him sell snacks and newspaper on the railroad. By age fourteen, he had published his first newspaper called the "Weekly Herald." At its high point, Tom sold 400 copies per day and was getting $10 per day (which was a lot back then). Because of the newspaper, he now had enough money to focus more on experiments. Tom now had one lab in the basement of his home and kept things for experiments in his locker on the train. One day, while crossing a bumpy section of the track, the train jerked, letting a chemical from Tom's experiment fall on the floor and set fire to the train. The conductor was so mad he hit... ...three more children. When Thomas grew older, so did his deafness. Mina told Tom what people were saying by tapping the words on his knee in Morse code. All in all, Thomas Edison was not a very good father because he was busy all the time. However, this busyness and hard work changed our lives with his many inventions. One of his famous quotes describes his attitude, "Invention is one percent inspiration and ninety-nine percent perspiration." Thomas Edison died on October 18, 1931 in West Orange, New Jersey. At his funeral, these words were spoken, "Picture an electric-lightless, an electric-powerless, a telephoneless, a motion-pictureless, a phonographless world, and a faint realization of his greatness dawns upon us." Bibliography Kevles, D., Keysarr A., Maier P., & Smith, M. (2002) A History of the United States: Inventing America. New York: W.W. Norton.

Business Plan Electrical Blinds

Description We offer solar powered blinds to both consumer and businesses. Taking part of the green movement, we allow our consumers to utilize direct energy from the sun that can be translated into powering small appliances within houses and corporate buildings. With most large building and houses using blinds we can capitalize on the large un tapped market place. Our goal is to partner with large blind companies and push forward our technology Marketing Plan and StrategyTarget Market Our main focus will be targeting home owners , business and building landlords. Offering our service to this niche market of green conscious building owners will allow us to capitalize on the reneable energy sector. Competitors Our competitors will be large corporation who have already developed solar panels that are able to translate into powering small appliances. These companies will easily be able to enter the market and take market share.Our biggest competitors will be 3M technologies who have alr eady developed small solar panel film that is able to be placed on solid objects. Pricing strategy Partnering with existing blind companies that already have existing contracts with building , home and landlord owners will be our largest attribute in penetrating the market. We will offer them a 8% profit in sales to use their blinds with our technology. In addition we will offer large distirubtion discounts to building owners to be more enticing to purchase our technologies with blinds.Promotion and distribution We will promote our product through government services that promote green movement within the energy sector. Distributing our products with large blind corporoation such as blinds to go will allow us to increase sales dramatically within the industry. Quality target To ensure quality we will have our technology fully certified before distribution. In addition we will * Green , durable , passes all ISO test Technology requirementsOur product will require solar power film tha t can recharge batteries which can power small application. Our blinds will have standard 12V adapters which will allow direct connection of appliances. Service support To keep our clients satisfied with our services we offer a 24/7 direct support line if any products fail during the desired warranty period. We offer 1,3 and 5 year warranty programs. Management Kyle – 10 years of electrical engineering back groundArchuna – 15 years of marketing and sales with a back ground in solar panel construction Shadan – 17 years of R&D at 3M technologies, specializing in solar panel construction. Background in blind sales from Blinds To Go. Organization structure Pyramid style CEO – Director – Employees Intellectual property: Patents – Solar panel film, battery charger, power adapter Copywrite – Solar panel blind architectural design Financial plan Receive funding from angel investors in order to market our solar panel film into the market.We pl an to invest in distribution, marketing our product. We will also invest in R&D to ensure efficiency and effectiveness of our solar panel film. Risk 1. New competitors that are able to replicate our technologies at a lower price. 2. Consumer will not adapt to our technology and will prefer standard blinds 3. Our prices will be for a niche market of consumers , the standard everyday living middle class buyer will not be willing to pay additional cost for our blinds

Should Renewable Energy Be A Better Choice For Poor...

Third World Going Green In the article, â€Å"Sorry, Bill Gates, But You’re Wrong on Renewable Energy† written by Jigar Shah and published by Time, we are given a blogging quote by Bill Gates. Gates says that cheap electricity should be distributed to poor countries to protect them from indoor air pollution that comes from burning dung, or anything else to cook. Shah reiterates by saying, and backs up, that investing into renewable energy sources are the better choice for poor countries. Not only for them because of its reliability but cheaper for us, the audience, to invest in for them. Even though he has a few good points why renewable energy is a better option, and his audience should believe him, he does not deliver it in a professional†¦show more content†¦His other clear objective from this article is displaying Gates as an idiot for suggesting coal consumption and siding with a scientist, Bjorn Lomborg, who is made clear to be a terrible person. The blog by Bill Gates on Gatesnotes titled â€Å"Two Videos that Illuminate Energy Poverty† gives us, obviously, two videos from Bjorn Lomborg only after a small disclaimer from Gates. In the post, Gates argues that developed countries should discover ways to make green energy cheaper or make nonrenewable energy cleaner. Individuals in developed countries are trying to set usage limits on third world countries when it is completely hypocritical. Energy assists the country to elevate themselves out of poverty and help save lives. Gates attached videos of Lomborg’s to backup how big of a difference energy has on poverty levels. Also, Gates specifically says, â€Å"I certainly don’t agree with Bjorn on everything, but I always find him worth listening to.† Shah attacks Gates for agreeing with everything this crazy scientist says when Gates clearly states that he does not. Being an article in Time, the majority of the audience is going to be older people. Time is a news magazine, and news is often directed at older people because, generally, they want to be informed about the world around them more than younger people. This article, in particular, is targeting an