The oceans may be divided into large biomes, or living regions (Figure 1). These zones are based on the distribution of marine organisms. The two major environments are the pelagic, which consists of the water column, and the benthic, which comprises the ocean bottom. The organisms that live in these zones can be classified in terms of the habitat they occupy. Figure 1. Classification of life zones in the oceans. The factors that affect primary productivity are (1) the availability of light, (2) the availability of nutrients and (3) the rate of grazing by primary consumers (herbivores). Figure 2. Seasonal variations in nutrient elements, plankton biomass and light for a mid-latitude oceanic region Questions Answer the following questions in terms of physical and/or chemical factors that might explain, or partially explain, various divisions in the Figure 1 classification. The division between the epipelagic and mesopelagic zones. The division between the mesopelagic and bathypelagic zones. This boundary is about 1000 meters deep, and it is a level at which many physical and chemical changes occur. The division between the supralittoral (above high tide) and littoral zones. The division below the sublittoral zone. Why is there no boundary at about 1000 meters in the benthic environment but a significant one at about the same depth in the pelagic environment? Think of what the main control on the benthic organisms might be that the pelagic organisms would not have to contend with, and vice versa. Answer the following questions using Figure 2. Why do the dissolved nutrients drop in the spring? Why does the spring phytoplankton bloom start in the spring and die out in the early summer? Why is there a difference in the steepness of the zooplankton biomass curves during the spring bloom? What are some possible reasons for a fall phytoplankton bloom? Where on earth would the plankton show a different seasonal pattern of growth and why?
Why Choose Us
Top Quality and Well-Researched Papers
We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.
Professional and Experienced Academic Writers
We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.
Free Unlimited Revisions
If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.
Prompt Delivery and 100% Money-Back-Guarantee
All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.
Original & Confidential
We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.
Customer Support 24/7
Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.
No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.
Admission and Business Papers
An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.
Editing and Proofreading
Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.
If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.