Environmental science homework help

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population of tree salamanders is highly variable in color and blends easily with the surrounding, colorful vegetation. After a factory upstream impacts their environment, several species of trees die off and only those with one color of leaf and flower are left. Within several generations, the salamander population has reduced variability in color.

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Environmental science homework help

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As water flows toward the head of a tributary valley, its volume and velocity are decreased, and its erosive power is decreased. True False

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Safety and Accident Prevention

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1.  Present the pros and cons of an employer participating in the OSHA Voluntary Protection Program (VPP) or the Star Program. Based on the pros and cons, explain why you would or would not recommend participation to an employer where you worked.
Your answer must be at least 200 words in length.

2.  Explain your thoughts on OSHA’s use of incorporation by reference and whether you believe it improves safety and health in the workplace. Discuss how you believe standards that are incorporated by reference can be used to improve safety and health at a workplace you know about.
Your answer must be at least 200 words in length.

3.  In 2017, the Acme Company had 30 individuals with recordable injuries, four individuals with a recordable illness from an occupational exposure, but no fatalities. The company had 400 employees who worked 40-hour weeks with 2 weeks off during the year. Calculate the total injury and illness rate (IR) for the company in 2017 using the following formula: IR = N X 200,000 ÷ T (N = number of injuries illnesses, and fatalities; Y = total hours worked by all employees during the period in question). Discuss how the calculated IR might be used by OSHA in determining programmed inspection schedules and how the company might use the IR to improve safety at the facility.
Your answer must be at least 200 words in length.

4.  Discuss the predicament that a safety professional faces knowing that some OSHA regulations are outdated and may not provide adequate protection for workers. Recommend an approach that you believe would overcome the issue.
Your answer must be at least 200 words in length.

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Environmental science homework help

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Click here to watch the NASA video Temperature Puzzle. Many people are quick to dismiss global warming after a cold winter or a late summer. After watching the video, how would you respond to this person? Why is it difficult to base climate on a single season’s weather? Use data and examples to support your answer. (Note: please base your discussion on what you have learned from the video and textbook reading. This is NOT meant to be a discussion of political ideology.)

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Everglades Capstone Project

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By LadyofHats (Own work) [CC0], via Wikimedia Commons  https://commons.wikimedia.org/wiki/File%3AFood_web_diagram.svg

Consider the food web above depicting a terrestrial food web and a marine food web. In the Everglades, a freshwater marsh, terrestrial and aquatic environments are interconnected. The complexity of this unique ecosystem can be analyzed by constructing a food web to trace the flow of energy between organisms.

Part 1: Your task for this project is to construct an illustrated food web to diagram trophic interactions in the Everglades ecosystem. The food web must be an original creation, you cannot submit a food web that you find online! You must use a minimum of 8 species that are found in the Everglades. You must indicate, using arrows or lines, the flow of energy between the species in your diagram. Be sure to upload your food web as an attachment in the assignment dropbox. Your constructed food web is worth 60 points.

Click here for a resource that will allow you to identify plants and animals that are found in the Everglades.

Part 2: Answer the following questions about the food web you constructed. Answers should be provided on a separate attachment in the assignment dropbox. Answers to the 10 questions using correct spelling and grammar are worth a total of 40 points.

1) List the producer(s) in your food web.

2) List the herbivores in your food web.

3) Are there any organisms in your food web that are omnivores? On which trophic levels are they feeding?

4) List the carnivores in your food web.

5) Identify and list a food chain within your food web that depicts at least three trophic levels. What organism in your selected food chain is a secondary consumer?

6) Are there any nonnative species in your food web? Briefly describe are they altering this food web in the Everglades ecosystem?

7) Choose a primary consumer in your food web. If its population suddenly started to decline, what density-dependent (biotic) factors could be causing it?

8) Choose a secondary consumer in your food web. If its population suddenly started to increase, what density-dependent  (biotic) factors could be causing it?

9) Are there any keystone species in your food web? If a keystone species were removed from your food web, how would its loss impact the other organisms?

10) Are there any endangered or threatened species in your food web? If the species goes extinct, how would its loss impact the other organisms?

Your capstone project is worth a total of 100 points.

Start Date

Jan 6, 2018 12:00 AM

Due Date

Apr 4, 2018 11:30 PM

Hide Rubrics

Rubric Name: Capstone Project Rubric

Criteria

Level 5 20 points

Level 4 16 points

Level 3 11 points

Level 2 7 points

Level 1 3 points

Criterion 1 Part A

Eight or more species are depicted in an original constructed food web.

At least 7 species are depicted in an original constructed food web.

Five or six species are depicted in an original constructed food web.

Only three to four species are depicted in an original constructed food web.

Two or fewer species are depicted in the constructed food web OR the food web is not an original student construction.

Criterion 2 Part A

Trophic structure is correctly and clearly indicated using arrows or lines to show feeding relationships for at least 8 species depicted.

Trophic structure is correctly indicated using arrows or lines to show feeding relationships for at least six species depicted.

Trophic structure is correctly indicated for at least four species depicted.

Trophic structure is NOT indicated for one or two of the species depicted.

Trophic structure is NOT indicated for any species depicted OR the food web submitted is a copy of one found online (not original work)

Criterion 3 Part A

All species depicted in the constructed food web are found in the Everglades.

All species depicted in the constructed food web, EXCEPT one, are found in the Everglades.

Two species in the constructed food web are NOT found in the Everglades.

Three or four species depicted in the constructed food web are NOT found in the Everglades.

Five or six species depicted in the constructed food web are NOT found in the Everglades OR the species depicted are from an unoriginal food web.

Criterion 4 Part B

At least 9 questions from questions 1-10 are answered completely and correctly.

Seven or Eight questions out of questions 1-10 are answered completely and correctly.

Only five or six questions from questions 1-10 are answered completely or correctly.

Only three or four questions from questions 1-10 are answered completely or correctly.

Two or fewer questions are answered completely and/or correctly from questions 1-10.

Spelling/Grammar

0-2 errors in spelling/grammar.

3-4 errors in spelling/grammar.

5-6 errors in spelling/grammar.

7-8 errors in spelling/grammar.

9 or more errors in spelling/grammar.

Overall Score

Level 4 90 or more

Level 3 80 or more

Level 2 70 or more

Level 1 0 or more

Excellent

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Industrial hygiene journals

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1. The placement of the industrial hygiene and safety functions in an organization’s structure can greatly impact how successful the programs will be. Some organizations place health and safety programs under the human resources department. Other organizations place these programs under the plant manager or the production manager. If you were a safety officer for an organization, where would you place health and safety programs in the organizational structure? Explain why you believe this placement would work best for your organization.

Your journal entry must be at least 200 words. No references or citations are necessary

2. You have been asked to perform a job hazard analysis (JHA) at your place of employment. Which method would you use to perform the JHA? Explain your choice.

Your journal entry must be at least 200 words. No references or citations are necessary.

3. Discuss a gas or vapor that you have dealt with in a workplace. Include information about how worker exposures were evaluated. If you have never had sampling for a gas or vapor performed in your workplace, review either the NIOSH Manual of Analytical Methods (NMAM) or the OSHA Sampling and Analytical Methods, and choose a vapor or gas that looks interesting to you.

Your journal entry must be at least 200 words. No references or citations are necessary.

4. The current OSHA permissible exposure limit (PEL) for nuisance dust is 15 mg/m3 as an 8-hour time-weighted average (TWA) exposure. The ACGIH has published a threshold limit value (TLV) for inhalable dust of 10 mg/m3. OSHA is required to consider economic and feasibility influences as well as health impacts for establishing or updating PELs. The ACGIH can consider only the health impacts when establishing TLVs. Imagine you are a safety officer having to establish an occupational exposure limit (OEL). Discuss how you would come to this exposure limit.

Your journal entry must be at least 200 words. No references or citations are necessary.

5. OSHA uses a 5 dBA exchange rate, meaning that the allowed exposure time is cut in half for every increase in exposure of 5 dBA. ACGIH and NIOSH recommend a 3 dBA exchange rate because noise energy exposure actually doubles every 3 dBA. OSHA explains the use of the 5 dBA exchange rate as a means to account for the time during a workday that the employee is not exposed to noise, like breaks. Imagine you are a safety officer who has to choose which exchange rate is preferable to use at your organization. Discuss in your journal entry whether the 5 dBA or the 3 dBA exchange rate should be used for controlling occupational noise exposure.

Your journal entry must be at least 200 words. No references or citations are necessary.

6. Imagine that you are a safety officer, and you have been asked to recommend a type of ventilation system for your company. Which one would you choose, and why?

Your journal entry must be at least 200 words. No references or citations are necessary.

7. OSHA allows respirator fit testing to be performed using either qualitative fit testing (QLFT) methods or quantitative fit testing (QNFT) methods that are specified in Appendix A of 29 CFR 1910.134. Discuss the fit testing methods with which you are familiar and which methods you prefer to use. If you have never been fit tested or performed fit testing, read Appendix A and discuss which of the methods you believe would be the easiest to perform. Give the reasons for your choice.,How can you apply what you learned in this course to your career or life success?

Your journal entry must be at least 200 words. No references or citations are necessary.

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The Tallahassee city commission

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Instructions: The Tallahassee City Commission unanimously approved a resolution establishing a goal of powering municipal operations entirely with renewable sources (like wind and solar) by 2035, and community-wide by 2050 (link).

Based on what you have learned so far from this class, discuss the following:

  • What advantages and disadvantages are there to going to 100% renewable energy?
  • Assume Miami were to also go 100% renewable energy and you were in charge of the transition. Give a specific plan on how you would phase in the renewable energy and phase out the non-renewable energy and in what time frame.

Make sure to:

  • Write a short essay or paragraph of at least 300 words.
  • Use concrete examples/details and avoid generalities.
  • Address both bullet points above.
  • Use proper grammar and punctuation.
  • Include at least 2 references in your discussion and cite your sources.
  • Do not plagiarize.
  • You will not be able to edit your assignment once you post, so please proofread and spell check before hitting post!

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Environmental science homework help

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Big Sugar, Lake Okeechobee, and Florida’s Water

Recent years have seen voter mandates to the Florida Legislature to deal with Everglades protection, dramatic videos of Summer time green slime outbreaks on both of South Florida’s coasts, and considerable infighting in the Legislature over whether or not to deal with the growing crisis in South Florida’s water flow.

A. Read these online stories and view the video as background prior to participating in his Forum. Do not participate in the discussion without having this background knowledge.

B. Now answer the following questions in your posting and number your responses B1 and B2 (worth 12 points).

1. How has cartoonist Doug MacGregor used the cartoon at the top of this page to illustrate the current status of the quality of South Florida’s water flow? That is, how has he used the map, colors, shapes, etc. to tell this story? (6 points)

2. Describe whether or not you think the illustration is accurate in its depiction. Use your textbook readings or the above articles/video to support your description. (6 points)

You must cite at least one source in your posting. Please use MLA or APA formating to cite your source.

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The Blue Sky Mine and Corporate Social Responsibility

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The Blue Sky Mine and Corporate Social Responsibility

In response to wartime demand, the Blue Sky Mine was opened in Western Australia in the early 1940s and operated until it became unprofitable in the mid-60s.

The mine and its aftermath became the subject of a smash hit by the Australian rock band, Midnight Oil, who recently have returned to the global rock music scene. The song is emblematic of the issue of corporate social responsibility and is part of the Oils’ vast catalog of songs on environmental and social justice issues.

When you get a chance, you may wish to listen to these music videos: Dead Heart, Beds Are Burning, and Dreamworld.

A. To prepare for your original posting, do some online research about the Blue Sky Mine and then view the official music video “Blue Sky Mine” by Midnight Oil in order to:

1. identify (and post using 1a, 1b, etc to identify your answers) –

  1. a. what was mined here and for what purpose the material was/is used
  2. b. how the Colonial Sugar Refinery treated its miners during and after the mine operations
  3. c. whether or not the company demonstrated principles of corporate social responsibility (look this term up if it’s unfamiliar to you)
    1. if they did demonstrate corporate social responsibility, describe at least two example of how they did demonstrate CSR
    2. if they did not demonstrate corporate social responsibility, describe at least two examples of how they could have demonstrated CSR
  4. who is responsible for ensuring corporate social responsibility in any setting in any nation and why

2. describe (and post) how Midnight Oil uses music (speed, tone, volume, key, etc.), lyrics, and, importantly, images to tell the story of the Blue Sky Mine

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Tox 4

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*********************************SEE STUDY GUIDE ATTACHMENT*****************************************

 

1) Explain the processes used by the body to eliminate a toxicant. Provide an example of a situation where one of these processes might be inhibited and how the inability to eliminate the toxicant might impact the individual.

Your response should be at least 300 words in length.

 

2) A doctor can send hair samples from a newborn infant to be analyzed in the lab to see if the mother drank alcohol during the pregnancy. This is one test that can be performed to assist in diagnosing fetal alcohol syndrome. Recalling what you know about elimination of toxicants, briefly explain why this test can be used to determine exposure to alcohol.

Your response should be at least 300 words in length.

 

3) Identify the three systems of the body in which toxicants can enter, give a brief description of how this may occur, and provide an example of a toxicant that can enter the body through each system.

Your response should be at least 300 words in length.

 

4) Identify the factors that can affect the distribution of a toxicant in the body. Explain how manipulation of these factors can increase toxicity.

Your response should be at least 300 words in length.

 

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