Humans alter the surrounding environment and land, often times in drastic ways.

Introduction

Humans alter the surrounding environment and land, often times in drastic ways. To live happy lives, we build a variety of structures to protect ourselves from the wind, rain, oceans, floods, fires, landslides, etc. There are two general types of control structures: erosional and flood. The following table lists some examples of each.

Discussion Topic

1. Review and select one Erosion control structure and one Flood control structure from the table. For each control structure you chose, respond to the following items:
   1. Describe the control structure and its purpose.
   2. Explain how the landscape is altered over time due to the control structure.
   3. Explain at least one benefit or advantage of using the control structure.
   4. Explain at least one drawback or disadvantage of using the control structure.
2. List at least two reliable references you used.  Wikipedia and news media shall not be used for this guide.
3. Read the posts from your classmates.
4. Respond to at least two other posts discussing the pros and cons between the two structures.

Grading Criteria

• Each control structure should be at least 200 words in length (400 total).
• All responses and explanations should be at least two to three complete sentences (35-50 words).
• The initial response should include at least two citations in .
• Poor spelling and grammar can affect the overall score by 3 points.
• Missing references can negatively affect the overall score by 4 points.
• Please review the to see how your grade will be determined.

Conversations

Start a new thread (topic) and post your findings for both types of control structures.

Compose a response to at least two control structures. Indicate the erosion or flood control structure you choose. Discuss the advantages or disadvantages between the two.