SCIN136 Week 3 Ocean Zones, Dissolved Gases, & Treasure Hunting

Week 3 Essay Assignments

Instructions: All written submissions should be submitted in a font and page set-up that is readable and neat. All essays must be prepared in Microsoft Word and uploaded to the appropriate online assignment. Please include your name, course number, week number and assignment name at the top of your submissions.
Submission Instructions:Please submit your answer in the submission box for this assignment. If you submit your essay as an attachment make sure that it is done in Microsoft WORD format.
Please cite your references for this and all essays with a URL or proper APA bibliographic citation.You may use the APUS on-line library to look for scholarly sources. The textbook may be cited as well a reference for essay answers. Be careful that you do not create a “cut and paste” paper of information from your various sources. Your essay should be new and freshly constructed in your own words. Also, take care not to plagiarize, credit your references.

Assignments completed in a narrative essay or composition format must follow the citation style cited in the American Psychological Association (APA).Students are encouraged to read/understand the Basics.
You may consult the Purdue OWL (On-line Writing Lab) website for instructions.

See attached grading rubric for scoring guidelines.
Also please make sure that you don not submit your essays as drafts. Instructors cannot grade and assign credit to drafts.

Here are this week’s essay options please respond to one of these:

(1) Why is the ocean layered?* Explain the PHYSICAL CAUSES of layering, and describe the major layers in the ocean. NOTE: In your research you may find the Hadalpeligic Zone. Hadal means Hades, why would the conditions here be “Hell-like”? Also during WWII and the Cold War submariners found the “deep-scattering layer” where they could hide from sonar. So for grins (and to help your grade on this item.) find out what & where it is while doing your research. Or just ask your local submariner, anybody who has ever served on a sub will know the answer to this. The attached article will prove useful here.
You can also check out this video that names the oceanic zones (and invertebrate phyla) from Finding Nemo:https://www.youtube.com/watch?v=ufxGw8EqY5Q
*When you research this topic you will find that some references mention a 3 layer or zone system while others like our text use a 5 layer or zone system. Let’s use the 5 layer system for this topic.

OR (2) The ocean has very significant concentrations of various gases dissolved in it. In the uppermost 1200 meters of the ocean, a graph of oxygen concentration against depth often shows two especially interesting features – (a) at perhaps 50 to 150 meters depth there is a subsurface oxygen maximum, and (b) at perhaps 750 to 900 meters depth, there are very low oxygen concentrations (some places approaching zero). For each (a & b), you must FIRST identify a physical or biological process that could be responsible for the feature, and then SECOND explain HOW that process might create the feature. Label the parts of your answer to correspond to the question. If you want to submit a diagram or picture, upload them to your MY FOLDER and tell the instructor via email ***

OR (3) A salvage company out of Florida worked in the Atlantic off of Europe to recover the treasure ($50 million so far) from a sunken ship (Spain claims it is one of theirs and actually arrested the divers and salvagers). The same company also found a British wreck worth an estimated $500 million. Research this and describe what types of technology would be used to locate and salvage the treasure (the wreck is almost a mile underwater) and what oceanic conditions (besides the Spanish Government) they would have to contend with to perform their salvage operations. Also mention how the Law of the Sea Treaty (UNCLOS) might effect this situation. By the way all successful treasure salvage operations start in LIBRARIES! Explain that factor. Read Lecture Week 1-A in the Lesson Packets it will really help with this one.



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