Archive for year: 2024

Question 1

 

Identify the factors that affect toxicity in a population. Pick three of the factors and provide a brief discussion on how that factor can affect the health of a population. 

 

Your response should be at least 250 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.

 

Question 2

 

Identify the factors that determine the fate of chemicals in the air and provide a brief discussion for each.

 

Your response should be at least 250 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.

 

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Unit III Reflection Paper
For this assignment, you are asked to prepare a Reflection Paper. After you finish the reading assignment for this unit, reflect on the concepts, choose one, and write about it. Consider the concepts that you may not fully understand; what did not quite make sense? The purpose of this assignment is to provide you with the opportunity to reflect on the material covered in this course and to expand upon those thoughts. If you are unclear about a concept, either read it again, or ask your professor about it.
This is not a summary. A Reflection Paper is an opportunity for you to express your thoughts about the material by writing about them.
The writing you submit must meet the following requirements:
 Be at least one page in length   Include one historical change or event that had an impact on the current fire prevention practices.  Include your thoughts about the concepts from this unit’s Reading Assignment   Optional—through this Reflection Paper, consider brainstorming ideas about how you would increase the public’s awareness about the importance of reacting to a fire. Use your creative ability and consider ideas other than what the textbook has to offer.
Format your Reflection Paper using APA style. Use your own words, and include citations and references as needed to avoid plagiarism.
Information about accessing the Blackboard Grading Rubric for this assignment is provided below.

 

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[INSERT TITLE HERE] 1

Running head: [INSERT TITLE HERE]

[INSERT TITLE HERE]

Student Name

Allied American University

Author Note

This paper was prepared for [INSERT COURSE NAME], [INSERT COURSE ASSIGNMENT] taught by [INSERT INSTRUCTOR’S NAME].

SCI 110: Environmental Science

Module 4 Homework Assignment

Directions: This homework assignment will be written in the form of a lab report. A lab report consists of the following sections: introduction, materials/methods, data, and conclusion. The introduction section is usually one (1) paragraph that explains the purpose or objectives of the lab and consists of a hypothesis. The materials/methods section lists everything that is needed to complete the experiment and describes all the steps that were taken during the experimentation. The data section includes what was recorded (facts not opinions) when the experiment was conducted. The conclusion section sums up what happened in the experiment. Please scroll down to see an example of a lab report.

You will write a lab report for the following task:

Test for mold in your environment.

INTRODUCTION. Explain the purpose or objectives of testing for mold in your environment. State your hypothesis. For example, do you think you will have mold in your environment? You will also need to perform some research using the internet and the LIRN Library (please visit the Academic Resource Center for guidelines on how to use LIRN). One (1) outside source should be cited in the introduction from a peer-reviewed journal (from LIRN or any other publicly available journal). Here you will need to include an in-text reference. Wikipedia or any other Wiki citation will not count towards this requirement. Failure to include this will result in a reduction of points in the final grade of the assignment.

MATERIALS/METHODS. In a paragraph (3 to 7 complete sentences), describe the materials that you will use to complete this experiment.

Materials supplied in the Mold Test Kit:

petri dish
cotton swab

vial with liquid contents

Then in two (2) to three (3) paragraphs (5 to 7 complete sentences in each paragraph), explain all the steps that you plan to take during the experiment. Please do not list the steps as shown below (copying the steps below will result in a reduction of points in the final grade of the assignment). The steps listed below will help you conduct the lab.

Step 1: Remove the petri dish from the plastic bag and lay it on a level surface with the lid side up.
Step 2: Remove the lid of the petri dish and pour the contents of the vial into the bottom of the dish.

Step 3: Replace the lid and swirl gently until the bottom is completely covered. Allow to harden for 1 hour on a level surface.

Step 4: Carry the covered dish to the area you wish to test. You will use the Settling Plate Method.

Step 5: Locate a level surface and remove the lid of the petri dish.

Step 6: Leave the petri dish open to the environment for a period of 1 hour. Once the 1 hour period is complete, you will replace the lid and allow it to incubate for 48 hours.

Step 7: Check the dish after 48 hours and note any signs of growing mold. You may leave the dish for as long as 96 hours to ensure that no slow growing mold has been overlooked.

DATA. Record the results of this experiment and relevant additional data. Note the presence or absence of mold.

CONCLUSION. In two (2) paragraphs (5 to 7 complete sentences per paragraph), explain what occurred and if your hypothesis was correct. Also, describe the impact of mold on the environment and determine if it is an environmental health hazard. Explain the four (4) types of environmental hazards.

REFERENCES. Please include a reference page that is formatted using APA style. For guidelines, please visit the Academic Resource Center.

Save and submit your lab report.

LAB REPORT EXAMPLE

INTRODUCTION. The purpose of this experiment is to determine the physical and chemical characteristics of a stream ecosystem and to determine the relative quality of the water ecosystem. Streams provide great recreational and general water resources for many people, therefore their cleanliness is important. Most streams in America suffer some impairment (Doe, 2015). My hypothesis is that the water ecosystem is highly polluted.

MATERIALS/METHODS. The materials used in this experiment are as follows: thermometer, rubber band, fishing line, bobber, plastic pipet, pencil, string, hand lens, plastic collecting jar, pH paper, stoppered agar test tube, and meter stick.

A number of steps were taken in this experiment. First, a rubber band was loosely wrapped around the bottom of the thermometer. Next, the second rubber band was wrapped tightly around the top of the thermometer, and then a fishing line was inserted through the rubber band at the top of the thermometer. The thermometer bulb was then inserted near the bottom of the stream. The thermometer remained in the bottom of the water for approximately 2 minutes to ensure that the temperature equilibrated. After 2 minutes the bottom temperature was recorded. After measuring the bottom water temperature, the thermometer bulb was placed just under the surface of the water and left for approximately 2 minutes. Then the surface temperature was recorded.

DATA. The water temperature was 50° Fahrenheit. This observation was made in sunny conditions with an ambient temperature of 60° Fahrenheit and after a brief precipitation event (less than 2 cm).

CONCLUSION. The temperature suggests that there is a high amount of pollution in the water ecosystem, which proves my hypothesis to be true. Other confounding variables with respect to temperature of the stream water are the weather conditions in the air (i.e., temperature) and the amount of precipitation recently received. Future experiments that may be conducted are to measure the temperature over several days to determine the influence of weather conditions on temperature and pollution.

REFERENCE.

Doe, J. (2015) Stream health and the environment. Environmental Journal of Nowhere 15(5): 12-32.

 

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Unit VI Case Study

 

Read the following scenario, and answer the questions following each section:

 

The Dosit Corporation is a chemical manufacturer, and its products are sold to other manufacturers and used in household cleaning products. The company has 290 employees with about 220 involved in the production process, 30 working as maintenance personnel, and the remainder in clerical, sales, engineering, and senior management positions. BOS 3125, Hazardous Materials Management 3

The company has never had a safety manager before it recently hiring you. The company president instructed you to find out what is wrong regarding safety and health and then to fix it. Several binders and files have been given to you with the explanation that they are the existing safety policies and records. Looking through one folder, you find a chemical inventory list from two years ago that included 780 chemicals. You find no records of hazard communication training, and the existing written program is very minimal and inadequate. You also look at the MSDS/SDS files and find considerably fewer than 780 MSDS/SDSs.

 

Question 1. What steps should you take to bring the company into compliance with the HCS considering best practices?

You went on a tour of your company’s chemical processing area with the production foreman. As with any such operations, there are pipes going everywhere and numerous tanks. You noticed that few of the pipes and none of the tanks have visible labels indicating what is in the tanks or pipes.

Question 2a. Is this a problem from a safety or regulatory point of view? Why?

 

Question 2b. What would be your recommendation on labeling considering the regulatory requirements?

 

You have just finished training the entire workforce about chemical hazards. The training was not well received by the workforce, and they generally appeared to be bored; end-of-class quizzes indicated that they did not really grasp the essential information. You do not understand how this could be because you carefully went over the MSDS/SDS for each chemical that a given group of workers were potentially exposed to and explained in detail the precautions they needed to take.

 

Question 3a. What most likely went wrong in this training?

 

Question 3b. How could future training be improved, including the explanation of chemical hazards without specifically addressing each chemical?

 

During the inventory, you find a quart can of a chemical with a label in the maintenance shop. You find out that the shop personnel only use it occasionally and for unfreezing rusted bolts. They do not seem to know anything about the chemical’s potential hazards, and the wording on the container is not totally legible, so you are not sure what the hazards are either.

 

Question 4a. How would find out about the proper use, storage, and disposal of this chemical?

 

Question 4b. How would you identify the chemical as hazardous, or as not hazardous?

 

During an inventory, you come across an unlabeled five-gallon container of a chemical on which someone has written a chemical name.

 

Question 5. What should you do, if anything, about this container?

 

Use complete sentences when formulating your responses, and use APA format when writing your responses.

 

Your paper must be a minimum of two pages in length, not including title and reference pages. Provide examples in your discussions, and support your answers with appropriate references and in-text citations.

 

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Question 1

Issue 13 – Aid Policies and World Hunger

a. What is the origin of the debate in this issue?

b. Outline and discuss three main areas of disagreement between Robert Paarlberg and Lester Brown.

c. Which side do you agree with? Explain your answer.

Your response should be at least 200 words in length.

 

Question 2

Issue 14 – Genetically Modified Foods

a. Describe genetically modified foods and why they are controversial.

b. Outline and discuss three main areas of disagreement between Gerald Coleman and Sean McDonagh.

c. Which side do you agree with? Explain your answer.

Your response should be at least 200 words in length.

 

Question 3

Issue 15 – Organic Farming

a. What is organic farming?

b. Outline and discuss three main areas of disagreement between Catherine Badgley and John Miller.

c. Which side do you agree with? Explain your answer.

Your response should be at least 200 words in length.

 

Question 4

Explain the various ways that U. S. aid policies impact the global food supply.

Your response should be at least 200 words in length.

 

Question 5

Describe your own personal feelings about genetically modified foods. Do you take extra care to make sure you are not purchasing those types of foods? Why or why not?

Your response should be at least 200 words in length.

Course Textbook

 

Easton, T. A. (2011). Taking sides: Clashing views on environmental issues (14th ed.). New York, NY: McGraw-Hill.

 

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