EBK BIOLOGY
10th Edition
ISBN: 9780133556209
Author: *BYERS
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Chapter 28, Problem 2AC
Define and give an example of biological magnification. What qualities are present in materials that undergo biological magnification? In which trophic level are the problems worst, and why?
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In shallow coastal ecosystems dominated by seagrasses, nutrients limit primary production under low nutrient (oligotrophic) condition while light becomes the limiting factor under high nutrient (eutrophic) condition. In the conceptual model given below, identify which group of primary producers (i.e. seagrasses, macroalgae, phytoplankton) corresponds to each of the line graphs by filling in the blank boxes. Explain your answer.
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In not more than 200 words or 5 sentences, answer or explain the following situation. In a seagrass ecosystem, nutrients restrict primary production under low nutrient (oligotrophic) conditions, while light becomes the limiting factor under high nutrient (eutrophic) conditions. Discuss how this happens with respect to the three primary producers (seagrass, macroalgae, phytoplankton) as the condition changes from oligotrophic to eutrophic.
Chapter 28 Solutions
EBK BIOLOGY
Ch. 28 -
1. Nearly all life gets its energy from _______...Ch. 28 -
2. Photosynthetic organisms are called either...Ch. 28 -
3. Feeding levels within ecosystems are also...Ch. 28 - In general, only about ______ percent of the...Ch. 28 - Prob. 5FTBCh. 28 -
6. During the nitrogen cycle, nitrogen gas is...Ch. 28 - Prob. 7FTBCh. 28 - Prob. 1RQCh. 28 -
2. What is a producer? What trophic level does it...Ch. 28 - 3. Define net primary production. Would you...
Ch. 28 - Name the first three trophic levels. Among the...Ch. 28 - How do food chains and food webs differ? Which is...Ch. 28 - Define detritivore and decomposer and explain...Ch. 28 -
7. Trace the movement of carbon from one of its...Ch. 28 - Prob. 8RQCh. 28 - Trace a pathway of a phosphorus molecule from a...Ch. 28 - Trace the movement of a water molecule from the...Ch. 28 -
1. Humans are omnivores who can feed on several...Ch. 28 - Define and give an example of biological...Ch. 28 - Discuss the contribution of human population...Ch. 28 - Describe what would happen to a population of deer...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Refer to Fig. 5.5. and redraw the important transformations of fixed nitrogen in ecosystems. Note the following processes: biological N fixation, non-biological N-fixation, ammonification, nitrification, denitrification. Reference: https://ecampusontario.pressbooks.pub/environmentalscience/chapter/chapter-5-flows-and-cycles-of-nutrients/arrow_forwardWhat perceives geotropic response?arrow_forwardHow would you describe the trophic levels in a typical ecosystem? Discuss the flow of energy through the ecosystem, the relationship between the different trophic levels, and the factors that limit the number of trophic levels.arrow_forward
- 1.) Describe a food chain that has at least four different trophic levels. Label the tropic level (Producer, Primary consumer, Secondary Consumer, or Tertiary Consumer), whether the organism is a(n) autotroph or heterotroph, and provide an example of an organism at each tropic level. 2.)Name two biological processes involved in rapid carbon exchange: 3.)Name two geologic processes involved in long-term carbon exchange:arrow_forwardThe key source of food for organisms living on the abyssal plain is... a) Descending photosynthetic productivity from the photic zone. b) Chemosynthetic productivity transported by turbidity currents. c) Local chemosynthetic productivity. d) Local photosynthetic productivityarrow_forwardWhy is an understanding of biogeochemical cycles essential in environmental science?arrow_forward
- Create a model which accurately, in detail, depicts the potential pathways of carbon (biomass) and energy in an ecosystem with at least five trophic levels (don’t forget your decomposers, they can count as one trophic level). Make sure to incorporate the multiple pathways that biomass and energy could take at each trophic level. Lastly, clearly illustrate how carbon and energy flow in this ecosystem. Be sure to include adequate levels of detail for all pathways and differentiate the flow of carbon and energy in your model.arrow_forwardhttps://www.biointeractive.org/classroom-resources/exploring-trophic-cascades create a case study based on additional research into other examples of trophic cascades. describe and illustrate how changes in an organismal population can have unintended effects on trophic levels or ecosystems. Identify the organisms and nutrients (if applicable) that are present in your trophic pyramid. Describe the normal flow of your trophic cascade along with whether removal or introduction of the organism has a positive or negative effect on other organisms or nutrient levels within an ecosystem.arrow_forwardcan someone please help me to answer questions a-b thank you 1In a trophic pyramid, each level is smaller than the one below. a) What does the size of each level represent? b) How much energy is transferred from level to level? c) Explain why the levels get smaller as the trophic pyramid goes up.arrow_forward
- What trophic level contains the greatest biomass in most ecosystems? Explain why this occurs.arrow_forwardWhat is Primary Production and what are the factors that limit primary production in terrestrial and aquatic ecosystems. Give examples of where some of the most productive systems are on land and in water. Distinguish between Gross Primary Productivity and Net Primary Productivityarrow_forwardPrimary productivity varies from ecosystem to ecosystem.Explain?arrow_forward
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