Freshwater crisis is one of the most pressing problem facing humanity- it is often said that this is due to mismanagement of water

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Freshwater crisis is one of the most pressing problem facing humanity- it is often said that this is due to mismanagement of water. When it comes to water management, the Supply-Side and later Demand-Side approach are considered the traditional management system. However, the world is moving towards a more sustainable style of management. What is this newest approach to water management known as? Explain how it is different from Supply Side and Demand Side Management emphasizing the advantages of the new approach.

There is a species of fish (with low numbers) that is having trouble traveling up and down the river because of a dam.

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  1. There is a species of fish (with low numbers) that is having trouble traveling up and down the river because of a dam.
  2. Chose an area that is economically depressed but has a lot of species diversity, you need to protect the species while providing jobs for locals.
  3. An animal is being poached for its horn which is believed in some cultures to cure many diseases, it is not critically endangered.
  4. The demand for farming is increasing, which is destroying native forests and affecting their biodiversity.
  5. An animal is starting to become isolated because it is afraid to cross roads created by deforestation.
  6. Local birds typically migrate over the winter, but people are feeding them and thermal pollution at a local stream is keeping the water warmer the birds are not migrating, resulting in water pollution.
  7. A drought has been going on for a period of time; the water needed for homes, businesses, and farms has decreased lake and river levels impacting the amount available for local flora and fauna.
  8. Species are being found dead on local beaches due to plastic.

Make pamphlet addressing the following:

  1. What is the issue and why it would work
  2. Describe the restoration method you selected and why it would be best (with at least 2 examples of how it has worked in similar situations from peer reviewed sources)
  3. Time frame to complete the plan (include short and long term objectives)
  4. What is the end goal of the restoration project

 What would happen to an ecosystem without decomposers? since some bacteria are decomposers, which fill an important role in the food web.

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 What would happen to an ecosystem without decomposers? since some bacteria are decomposers, which fill an important role in the food web.

a. Autotrophs would take over the role of decomposers

b. All levels of the food web would be affected because it would be difficult to recover nutrients from dead matter and waste

c. Consumers would be most affected because decomposers are the main source of energy

entering the food web.

d. Primary producers would increase because of the excess nutrients available.

 

A wetland area is a fully functioning ecosystem that contains a diversity of plant, insect, and animal populations. Which of the following ecosystem services does this wetland most likely provide?

I. Clean water

II. Nutrient control

III. Soil preservation

I only

I and II only

II and III only

I, II, and III

 

The island biogeographical model can be described by which factor?

a. Dispersing species are more likely to find smaller secluded habitats

b. Migrating species are more likely to find larger habitats over smaller ones

c. Smaller populations are less likely to go extinct

d. Large islands have less available niches for immigrating species

How do you expect the population trends to change after 2009 if changes in the aquatic environment make dark brown sea lions more reproductively successful than sea lions with light brown coats?

a. The percentage of dark brown sea lions will increase, and the percentage of light brown sea

lions will decrease.

b. The percentage of light brown sea lions will increase, and the percentage of dark brown sea

lions will decrease.

c. The percentages of both dark brown and light brown sea lions will increase.

d. The percentages of both dark brown and light brown sea lions will decrease.

 

Pollution in an ocean ecosystem has caused a significant drop in sea otter population. Within a year, scientists monitoring the ecosystem note that the sea urchin population on which the otters feed has greatly increased. The prevalence of sea urchins has caused the kelp and algae populations on which the urchins feed to decrease. The scientists fear the urchins will also begin to overwhelm the ecosystem’s fragile coral population. Which species is most likely the key stone species in the ecosystem?

a. Algae

b. Coral

c. Sea star

d. Sea urchin

When there are more organisms in a population than the ecosystem can sustain, this

is known as a

a. biological capacity

b. biological surplus

c. carrying capacity

d. carrying surplus

 

 

 

 

What is your community’s level of risk from a hurricane? Consider the preparedness factors into your own emergency plan.

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What is your community’s level of risk from a hurricane? Consider the preparedness factors into your own emergency plan.
Determine what community leadership should do, and advise community stakeholders to do, before, during, and after hurricane. Evaluate the federal/national and state emergency plans for your community

You have learned about our living natural resources (biota), biogeochemical cycles and how our lifestyle choices have disrupted various ecosystem services, like pollination

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This week, you have learned about our living natural resources (biota), biogeochemical cycles and how our lifestyle choices have disrupted various ecosystem services, like pollination. For this discussion, please share your observations from the Week 6 – Eco Moment (Impact of Bee Losses) Xerces site you explored.  Using reliable external sites and/or information presented this week from IPBES, investigate the financial investment we need to make in our pollinators now versus the costs we will have to pay in the coming decades if we fail to do so.  Finally, compare pollination to another important ecosystem service of your choice with an emphasis on how declining biodiversity impacts your chosen service.

Given this equation (I = P x A x T), what drives environmental decline? The equation describes the multiplicative contribution of population (P), affluence (A) and technology (T) to environmental impact (I) IPAT

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Given this equation (I = P x A x T), what drives environmental decline? The equation describes the multiplicative contribution of population (P), affluence (A) and technology (T) to environmental impact (I) IPAT

  1. Compare the United States with a developing country of your choice and conduct some research. (France) How do the factors given in the I=PAT equation differ for these two countries? Can you calculate or find actual calculations of the value I?
  2. Describe one or two of the most pressing environmental issues faced by the developing country you selected (France) . How are these issues related to population growth and affluence in this country? Consider age structure, population growth rate, and standard of living here.

To explore the mechanism of eutrophication what dilemma do scientists scramble with as it is well documented that eutrophication/nutrient enrichment triggers Harmful Algal Blooms (HABs) and deteriorates water quality?

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  1. To explore the mechanism of eutrophication what dilemma do scientists scramble with as it is well documented that eutrophication/nutrient enrichment triggers Harmful Algal Blooms (HABs) and deteriorates water quality?
  2. To suggest solutions for overcoming challenges (possible consequences of eutrophication). Solutions can involve individual actions, economic or political strategies.

# Guidelines:Read the two articles from the links below, one from Environment Education Victoria and the other a release from a Nature Education-Knowledge Project that relate the dead zones mediated by eutrophication to indiscriminate use of insecticides, pesticides, and fertilizers. # Answer the following two questions-Thoroughly justify your answer by examining both your position and the opposing viewpoint:

  1. How do changes in the ecosystem due to nutrient enrichment impact the health and wellbeing of species, including Homo sapiens?
  2. How can advances in scientific understanding of eutrophication be applied to manage and mitigate the effects of multiple anthropogenic pressures?

Articles recommended for this assignment:

  1. https://static1.squarespace.com/static/5d26734450f86400010b7c59/t/5f50c90e7cc2221ac4c4e029/1599129878567/U1AoS2+%E2%80%93+Eutrophication.pdf
  2. https://www.nature.com/scitable/knowledge/library/eutrophication-causes-consequences-and-controls-in-aquatic-102364466/

Please post the links of the cites that you take information.

What is the water cycle and why is it important to freshwater resources?

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  1. What is the water cycle and why is it important to freshwater resources?
  2. What should society learn from the case history of the Aral Sea?
  3. What are the major kinds of water pollutants and how do they degrade water quality?
  4. Why is untreated sewage such an important water pollutant to remediate?
  5. Why are people facing a crisis involving water pollution and how can we solve it?

Examine types of water pollution and cleanup measures

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Introduction: In this lab, we will examine types of water pollution and cleanup measures.

Materials:

  • Two small, clear containers (approx. 16 oz)
  • Water
  • Food coloring
  • Oil
  • Coffee filter and rubber band (or powdered detergent or corn meal)

Procedure:

Fill both containers about one third full of water.

Contaminate each glass of water with a pollutant. Add two drops of food coloring to one class and about two tablespoons of oil to the other. The food coloring will represent a pollutant like excess nitrogen from fertilizers that mixes with water. The oil will represent pollutants like oil that do not mix with water. (If you do not have food coloring, start with a water-based liquid that has a strong color like a sports drink, do NOT use orange juice.) Let the mixtures stand for 10 minutes and record your observations below:

Observation Table
Observations after adding contaminant
colored
oil
Observations after adding water
colored
oil
Observations after attempting physical removal
colored
oil

 

Now, add water to each container, at least doubling the current water level. Note your observations on the table.

Finally, try removing the contamination by filtering through a coffee filter. Use rubber band to affix coffee filter to another container and carefully pour through (do not run through a coffee machine/maker as you don’t want to contaminate your coffee machine/maker). If you do not have a coffee filter, carefully add detergent or corn meal. Let it sit without stirring and then remove before noting your observations above.

Follow-up questions:

  1. What was the difference you noticed between the coloration pollution and the oil pollution before adding more water?
  2. Some people say, “The solution to pollution is dilution.” What do you think of that after trying it (adding water was dilution)?
  3. After noting the differences between adding water and attempting to filter out the contaminant, what do you think about pollution remediation for water contamination? Are the same methods going to be successful for all pollution types?

In this lab, we will examine the water cycle. Review the water cycle in this week’s reading before beginning

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Introduction: In this lab, we will examine the water cycle. Review the water cycle in this week’s reading before beginning. Remember, the scientific method involves observations and predictions (hypotheses). Beginning this lab with predictions will help you understand the water cycle better as well as reinforce the scientific method.

Materials:

  • Two clear zip top bags
  • Water
  • Food coloring
  • Sunny window

Procedure:

Pour a small amount of water in both zip top bags. In one bag, add food coloring. (If you do not have food coloring, use a small amount of a water-based liquid that is already colored like dark or bright juice, sports drink, etc.)

Place both bags in a sunny window (this requires timing as some windows get morning sun, while others may get evening sun). You may need to prop up the bags, but try not to block the sun.

Check the bags periodically (at least 6 times) and describe what you see. Include details about any color changes, water vapor, water droplets, water movement, color of water that accumulates on the bag, etc.

Note: If you do not note any changes. Microwave the bag for 10 second intervals, making observations after each. Do not remove bag from microwave to make observations and let bag cool before removing.

Fill out the following table with your observations, include time of observation to get a sense of time passage between observation:

Observation time Description

 

Follow-up Questions:

  1. Summarize the progression of what you observed?
  2. What did the drops on the bag eventually do?
  3. Did you see any color in the water droplets that collected on the inside of the bags?
  4. Does that have any implications for whether pollution would move from a source of water like a lake to another location via precipitation?