Evaluates potential hazards caused by humans that might affect your ecosystem’s stability, such as environmental pollution. What effect does this hazard have on the biodiversity in your ecosystem?

Create a diagram in which you illustrate the energy flow among organisms of a food chain in a particular ecosystem.

Select an ecosystem, such as a temperate forest, desert biome, or the Everglades.

Determine the interdependency of life in your ecosystem by examining its organisms.

Include the following:


·        List the organisms that can be found in your ecosystem. What is the benefit of this biodiversity?

·        Label major organisms that live in your selected ecosystem: P for producers, C for consumers, and D for decomposers.


Write a summary of your food chain that:


·        Describes the major categories of organisms: producers, consumers, and decomposers.

·        Describes the interactions between organisms in your ecosystem.

·        Evaluates potential hazards caused by humans that might affect your ecosystem’s stability, such as environmental pollution. What effect does this hazard have on the biodiversity in your ecosystem?

·        Lists the abiotic factors present in your ecosystem.


·        Describes the food chains associated with your ecosystem. Address the following items:


o   Name of the plant or animal

o   What it eats

o   What eats it

o   How it has adapted to the ecosystem



Content and Development

70 Points

Points Earned


  Additional Comments:
All key elements of the assignment are covered in a substantive way. The diagram includes the following:

Shows the flow of energy of the food chain

Lists organisms present in the ecosystem and identifies their contribution to biodiversity

Labels major organisms as producers, consumers or decomposers

The paper includes the following:

Describes the interactions of organisms in the ecosystem

Evaluates potential hazards caused by humans

Lists abiotic factors present in the ecosystem

Lists and described the food chains present in the ecosystem

Name of the plant or animal

What it eats

What eats it

How it has adapted to the ecosystem

Nice work showing the flow of energy, listing organisms, identifying the importance of biodiversity, and labeling organisms as producers, consumers, or decomposers.


Great job listing and defining your food chain, describing interactions and evaluating the potential hazards caused by humans.

The content is comprehensive, accurate, and persuasive.
The paper develops a central theme or idea directed toward the appropriate audience.
The paper links theory to relevant examples and uses the vocabulary of the theory correctly.
Major points are stated clearly; are supported by specific details, examples, or analysis; and are organized logically.
The introduction provides sufficient background on the topic and previews major points.
The conclusion is logical, flows from the body of the paper, and reviews the major points.
Readability and Style

15 Points

Points Earned


  Additional Comments:
Paragraph transitions are present, logical, and maintain the flow throughout the paper. Nice work. No major errors here.
The tone is appropriate to the content and assignment.
Sentences are complete, clear, and concise.
Sentences are well constructed, strong, and varied.
Sentence transitions are present and maintain the flow of thought.

15 Points

Points Earned


  Additional Comments:
The paper—including tables and graphs, headings, title page, and reference page— is consistent with APA formatting guidelines and meets course-level requirements. Please remember to include in-text citations for each of your references.
Intellectual property is recognized with in-text citations and a reference page.
Rules of grammar, usage, and punctuation are followed.
Spelling is correct.

100 Points

Points Earned


Overall Comments: Great way to finish off this course. It has been a pleasure working with you during the past nine weeks. I hope this assignment provided more insight into food web diagrams. You created a web and analyzed it using the principles of ecology. Nice work describing interactions and labeling producers and consumers, identifying abiotic factors and evaluating threats to biodiversity. I wish you the best of luck in your future endeavors!





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