...In the United States, we are fortunate to have an abundant supply of food. However, this abundance is largely due to advances in agricultural technology, which have in turn created numerous concerns surrounding our food sources. Provide at least two modern examples of how the United States has increased its food production. Using at least two scholarly or reputable resources and your textbook, discuss how these changes have affected the environment, and what impact they have on food safety? “The use of genetically engineered crops has grown rapidly in countries such as the United States” (Turk, J. & Bensel, T., 2014). This is one modern example of how the United States has increased its food product. But with great advances and technological discoveries, there sometimes comes a tradeoff. This trade off comes in the price of adverse reactions on the environment according to some sources. Some scientist and anti GM groups warned that GM crops, by encouraging liberal use of glypsosate, were spurring the evolution of herbicide resistance in many weeds. Obviously this is not beneficial to crops on the environment. That question that must be asked is whether or not the pros outweigh the cons of continuing the use of GM crops. In my opinion, I believe that we should continue to use GM crops, but also research its effects and develop ways to make the production of these crops more “green” and safe for consumption. I don’t think that we should dismiss this method because...
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...Lab 1 – Introduction to Science Exercise 1: The Scientific Method Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below. QUESTIONS 1. Make an observation – Based on the data in Table 4, discuss what patterns you observe in regards to dissolved oxygen content and fish populations in the body of water? Answer = Dissolved oxygen is crucial for fishes to live, so no fish can be observed with a 0 ppm concentration of O2 (as shown by table 4). There is a significant increase in fish population when the concentration of dissolved oxygen is 6 ppm or above. The fish population seems to be at its best at 12 ppm of concentrated dissolved oxygen. 2. Do background research – Utilizing at least one scholarly source, describe how the dissolved oxygen content in a body of water can effect fish populations. Answer = Dissolved oxygen is critical to the survival of aquatic animals. According to Tsai (1970) “When faced with low dissolved oxygen, many fish species will migrate to more tolerable regions, dramatically altering the...
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...Lab 2 – Water Quality and Contamination iExperiment 1: Effects of Groundwater Contamination |Table 1: Water Observations (Smell, Color, Etc.) | |Beaker |Observations | |1 |Water is perfectly clear/no odor | |2 |Cloudy/ oil sits on top of water/ no odor | |3 |Slight odor/almost unidentifiable other than smell/ good clarity | |4 |Slightly cloudy/ bubbles form on surface/ no odor | |5 | Water is brown in color/ some sediment/ no odor | |6 |Water is brown in color/ some sediment/ no odor/still a presence of | | |oil/very cloudy/oil collected in soil | |7 |Water is brown in color/cloudy/...
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...Lab 3 – Biodiversity Demonstration 1: Interdependence of Species Table 1: Interdependence of Species Results Round Species Missing (Bead Color and Name) 1 Yellow – Bees 2 Blue - Humans 3 Red – Flowers 4 White - Lichen POST LAB QUESTIONS 1. Explain how the ecosystem was affected by the missing species for each round of the demonstration. a. Round 1 = without bees, trees and plants could not be pollinated; humans would no longer have honey or enjoy the fruit the sweet taste of fruit due to lack of pollination. b. Round 2 = without humans, perhaps there would be a reverse effect. The ecosystem would perhaps be in better shape if humans were not in the equation since they are the ones who have the biggest impact. c. Round 3 = without flowers, bees would go without part of their food source d. Round 4 = without lichens, plants and trees would suffer because there would not be the necessary nutrients present in the soil around them. 2. Provide one action we as humans engage in that leads to the extinction of each of these components. Action affecting Lichens = Lichens depends on air and water for nutrients which is affected by things such as air travel and exhaust fumes. Action affecting Trees = People cutting down trees is one main way that leads to extinction. Action affecting Flowers = People are clearing off land in order to plant crops and trees Action affecting Bees = There is intensive farming being done and as a result eliminate food that bees...
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...The two alternatives to oil as energy sources that I will be focusing on today are hydropower and coal. As our course textbook discusses, we are living in the age of “peak-oil”. This means that although we our unsure of how much oil lies beneath us, it would be wise to assume that there is not an endless supply of oil and the demand for oil is continuously on the rise. Aaron Lehmer-Chang, an advocate for locally resilient communities, notes that “renewable energy simply cannot be scaled up at the pace needed to supplant our fossil fuel use” (2014, Para. 10). Hydropower and coal are possible alternatives to oil as energy sources; however, both sources come with challenges of their own as viable replacements for oil. As discussed by Turk and Bensel in our textbook, “The main appeal of coal is its abundance.” (2014, Ch. 6.4). While coal might be abundant, it is also one of the harshest energy sources on our environment. Coal is largely carbon-based, and along with that comes large emissions of carbon dioxide into the atmosphere. (Turk & Bensel, Ch. 6.4) With the environmental associated with coal, it cannot be describes as a viable long term substitute for oil as a primary source of energy. Hydropower may be much more environmentally friendly in terms of carbon emissions in to the atmosphere, but some environmentalists still contend that it is not completely environmentally friendly. In an article released by the Environmental News Network, it is mentioned that “Environmentalists...
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...WATER QUALITY AND CONTAMINATION Name: Instructor: Institution: Course: Abstract The experiment was based on the identifying the effect of different contaminants on ground water. The yielded result indicated that, when vinegar is filtered through dirt the vinegar filtrate was relatively clean. The results noted were indicative that vinegar is not affected by contaminants that affect. Introduction In the lab report, we will have a look at how various contaminates influence the water supply. In the world, there are various contaminates that contaminate ground water. These contaminants range from the simple items we use in the house such as cooking oil and laundry detergents to the well-known contaminants that come from agricultural and industrial processes. The experiments sought to answer the question how and why these particular contaminants affect what we drink from the faucet. One of the most common contaminants in water is lead. Studies have indicated that had a detrimental effect on children especially those in the development stages of their life and cancer in adults. According to Bruce Lanphear, a renowned pediatric epidemiologist, lead found in water is usually underappreciated service in terms of intake of lead. Statistics has shown that approximately 10-20% of children are exposed to lead through intake of drinking water. Pharmaceutical chemicals are another common contaminant of water. Many individuals usually do not know that they are exposed to this form...
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...Lab 4 – Energy Sources and Alternative Energy Experiment 1: The Effects of Coal Mining |Table 1: pH of Water Samples | |Water Sample |Initial pH |Final pH (24-48 hours) | |Pyrite |6 |4 | |Activated Carbon |6 |7 | |Water |6 |6 | POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water? a. Pyrite hypothesis = If pyrite is introduced to the water, then it will be more acidic. b. Coal hypothesis = If coal is introduced to the water, then the ph level will stay the same. 2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1? Explain how you determined this. a. Pyrite hypothesis accept/reject = I accept my hypothesis because after the pyrite was introduced to the water the level of ph dropped to 4 making the water more...
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...Kedeisha Carty LAB QUESTIONS 1. Identify natural and human-made causes of climate change visible in the computer simulation. According to the computer model, how have sources of heat-trapping pollution changed from 1750 to today? How does the simulation predict they will change by 2050? The sources of heat-trapping pollution, carbon dioxide, methane and nitrous oxide have grown since 1750 to today and pushed up the temperature from 57ᵒF to 59ᵒF and by 2050 the temperature rose to 63ᵒF showing an even higher increase of pollution in a shorter span of years. These three sources occur naturally and are also produced by human acts. According to the simulation’s prediction, carbon dioxide and nitrous oxide pollution in 1750 were most dominant with carbon dioxide in the lead, while methane was attributing the least amount of heat-trapping pollution. The simulation’s prediction of heat-trapping pollution in today’s world showed an increase in heat-trapping pollution build-up within the atmosphere and like before the sources were carbon dioxide (more dominant) and nitrous oxide; methane remained at a low concentration as before. By the year 2050, according to the simulation, the heat-trapping pollution increased at a higher significant rate than 1750 and today by 2050. In fact all three sources of heat-trapping pollution seemingly were at an even level in the polluted air. 2. According to the computer model and your readings, which source(s) of heat-trapping pollution contribute...
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...SCI 207 WEEK 4 AND 5 COMPLETE WORK – LATEST To purchase this, Click here http://www.activitymode.com/product/sci-207-week-4-and-5-complete-work-latest/ Contact us at: SUPPORT@ACTIVITYMODE.COM SCI 207 WEEK 4 AND 5 COMPLETE WORK - LATEST SCI-207-Week-4-DQ-1-Climate-and-Air-Pollution SCI-207 Week 4 Lab 4 Energy Sources and Alternative-Energy SCI-207-Week-4-Quiz SCI-207-Week-5-Assignment-Final-Lab-Report SCI-207-Week-5-DQ-Waste SCI-207-Week-5-Lab-5-Weather-and-Climate-Change SCI 207 Week 4 And 5 Complete Work - Latest SCI 207 Week 4 And 5 Complete Work solutions include the tutorials for week 4 and week 5 assignments. Lab, DQ, Quiz and Assignments all are answered in this package. This tutorial will help you in securing A+ grade. Please read over the Sample Final Lab Report before beginning this assignment (PDF can be found in your online course). SCI 207 WEEK 4 AND 5 COMPLETE WORK – LATEST To purchase this, Click here http://www.activitymode.com/product/sci-207-week-4-and-5-complete-work-latest/ Contact us at: SUPPORT@ACTIVITYMODE.COM SCI 207 WEEK 4 AND 5 COMPLETE WORK - LATEST SCI-207-Week-4-DQ-1-Climate-and-Air-Pollution SCI-207 Week 4 Lab 4 Energy Sources and Alternative-Energy SCI-207-Week-4-Quiz SCI-207-Week-5-Assignment-Final-Lab-Report SCI-207-Week-5-DQ-Waste SCI-207-Week-5-Lab-5-Weather-and-Climate-Change SCI 207 Week 4 And 5 Complete Work - Latest SCI 207 Week 4 And 5 Complete Work solutions include the tutorials for week 4 and week 5 assignments...
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...SCI 207 WEEK 4 AND 5 COMPLETE WORK – LATEST To purchase this tutorial visit here: http://wiseamerican.us/product/sci-207-week-4-5-complete-work-latest/ contact us at: SUPPORT@WISEAMERICAN.US SCI 207 WEEK 4 AND 5 COMPLETE WORK – LATEST SCI-207-Week-4-DQ-1-Climate-and-Air-Pollution SCI-207 Week 4 Lab 4 Energy Sources and Alternative-Energy SCI-207-Week-4-Quiz SCI-207-Week-5-Assignment-Final-Lab-Report SCI-207-Week-5-DQ-Waste SCI-207-Week-5-Lab-5-Weather-and-Climate-Change SCI 207 Week 4 And 5 Complete Work – Latest SCI 207 Week 4 And 5 Complete Work solutions include the tutorials for week 4 and week 5 assignments. Lab, DQ, Quiz and Assignments all are answered in this package. This tutorial will help you in securing A+ grade. Please read over the Sample Final Lab Report before beginning this assignment (PDF can be found in your online course). SCI 207 WEEK 4 AND 5 COMPLETE WORK – LATEST SCI-207-Week-4-DQ-1-Climate-and-Air-Pollution SCI-207 Week 4 Lab 4 Energy Sources and Alternative-Energy SCI-207-Week-4-Quiz SCI-207-Week-5-Assignment-Final-Lab-Report SCI-207-Week-5-DQ-Waste SCI-207-Week-5-Lab-5-Weather-and-Climate-Change SCI 207 Week 4 And 5 Complete Work – Latest SCI 207 Week 4 And 5 Complete Work solutions include the tutorials for week 4 and week 5 assignments. Lab, DQ, Quiz and Assignments all are answered in this package. This tutorial will help you in securing A+ grade. Please read over the Sample Final Lab Report before beginning this assignment (PDF...
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...Switching from the expensive oil to alternative fuels has moved from a dream to reality. Today, there are dozens of alternatives to oil that are currently available us to be used. One alternative to oil that is being used more today is ethanol. Derived from plant materials, ethanol can be a cheaper, cleaner alternative to the gasoline that our vehicles run off. When going to gas pumps, one will notice that much of the gasoline is up to 10 percent of ethanol. According to our text, most ethanol in the U.S. is made from corn, yet ethanol can be made from any biomes-- including garbage. (Turk & Bensel, 2011) Another alternative to oil being used is solar energy. Everyone knows that the sun is the most important source of energy to our planet. This is a free source of energy and with it there is no pollution. Today, homes are being built with solar panels. Today, solar energy is cost-efficient to where most of the systems life span may be between 30 to 40 years. According to the Solar Energy Research, Development, and Demonstration Act of 1974, solar energy includes both direct and indirect solar sources. The direct uses of the sun’s rays are primarily in the forms of photovoltaic cells, solar thermal systems, and solar buildings; the indirect uses of solar sources include biomass energy that relies on the sun’s role in the process of photosynthesis, wind energy, and ocean thermal energy derived from differential solar heating of land and water surfaces. Let's talk about the...
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...Introduction to Science Name SCI 207 Date Lab 1 - Exercise 1: Data Interpretation Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below. Questions 1. What patterns do you observe based on the information in Table 4? The fewer amounts of fish, the more oxygen there is in the water. They oxygen is measured in 2’s and the less fish there is the more oxygen there is. 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water? The more fish there is, the less amount of oxygen there is in the water. According to author’s Mckinsey& Chapman, “for fishes, dissolved oxygen is an abiotic factor that can limit habitat quality and affect survival, growth, and reproduction” (Mckinsey, D. & Chapman, L. 1998, pg. 211, para. 1). 3. What would your experimental approach be to test this hypothesis? I would add fish to the water and test the oxygen, and then remove fish and test the...
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...Binder and A. Milchev, J. Polym. Sci. B 50, 1515 (2012). 16M. Tagliazucchi and I. Szleifer, Soft Matter 8, 7292 (2012). 17A. N. Constable and W. J. Brittain, Colloids Surf. A 380, 128 (2011). 18N. Li, C. Zuo, and Q. Cao,J. Macromol. Sci. B 51, 275 (2012). 19R. P. Castro, H. G. Monbouquette, and Y. Cohen, J. Membr. Sci. 179, 207 (2000). 20L. Lanotte, S. Guido, C. Misbah, P. Peyla, and L. Bureau, Langmuir 28, 13758 (2012). 21E. M. Sevick, Macromolecules 29, 6952 (1996). 22S. P. Adiga and D. W. Brenner, Nano Lett. 5, 2509 (2005). 23T. Suo, T. N. Shendruk, O. A. Hickey, G. W. Slater, and M. D. Whitmore, Macromolecules 46, 1221 (2013). 24T. Suo and M. Whitmore, J. Chem. Phys. 140, 114901 (2014). 25G. S. Grest and M. Murat, Macromolecules 26, 3108 (1993). 26T. Suo and M. D. Whitmore, J. Chem. Phys. 138, 164907 (2013). 27G. H. Fredrickson, The Equilibrium Theory of Inhomogeneous Polymers (Oxford University Press, New York, 2006)...
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...http://homeworktimes.com/downloads/acc-202-complete-course-acc-202-entire-course/ http://homeworktimes.com/downloads/acc-206-entire-course-new/ http://homeworktimes.com/downloads/acc-206-new-week-1-assignment-chapter-one-problems/ http://homeworktimes.com/downloads/acc-206-new-week-2-assignment-chapter-two-three-problems/ http://homeworktimes.com/downloads/acc-206-new-week-2-journal-institute-management-accounting/ http://homeworktimes.com/downloads/acc-206-new-week-3-assignment-chapter-four-five-problems/ http://homeworktimes.com/downloads/acc-206-new-week-3-journal-hershey-company/ http://homeworktimes.com/downloads/acc-206-new-week-4-assignment-chapter-six-seven-problems/ http://homeworktimes.com/downloads/acc-206-new-week-5-assignment-chapter-eight-problems/ http://homeworktimes.com/downloads/acc-206-new-week-5-assignment-final-paper/ http://homeworktimes.com/downloads/acc-212-financial-accounting/ http://homeworktimes.com/downloads/acc-250-complete-course-acc-205-entire-course/ http://homeworktimes.com/downloads/acc-290-complete-course-acc-290-entire-course/ http://homeworktimes.com/downloads/acc-291-complete-course-acc-290-entire-course/ http://homeworktimes.com/downloads/acc-340-entire-course-acc-340-complete-course/ http://homeworktimes.com/downloads/acc-400-complete-course-acc-400-entire-course/ http://homeworktimes.com/downloads/acc-407-entire-course/ http://homeworktimes.com/downloads/acc-455-complete-course/ http://homeworktimes.com/downl...
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...Assignment #3 Documented Essay: Chemistry SCI 110 Professor Denise Stiglich Describe the difference between a mixture and a compound As described in the text book, a mixture has unlike parts and a composition that varies from sample to sample (Tillery, p. 200). The book provides an example of sand from a beach. It has a variable mixture of such things as bits of rocks, minerals and sea shells (Tillery, p. 200). A compound is a pure substance that can be decomposed by a chemical change into simpler substances with a fixed mass ratio (Tillery, p. 201). So the difference is that a compound is made up of two or more elements that have a composition that is constant. And a Mixture is an aggregate of two or more substances that are not chemically united. Suppose that you have a pure substance. How can you tell whether it is a compound or an element? The way you can tell if a pure substance is a compound or an element is that an element is made up of one kind of atom. For example, gold is an element. If you were to keep cutting the gold until you only had one particle of gold that couldn’t be cut anymore, you would have one atom. A substance that is a compound has two or more elements. For example, water is a compound that is made up of two different elements, hydrogen and oxygen. What is the difference between an ionic and a covalent bond? As stated in the text book, an ionic bond is defined as the chemical bond of...
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