Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 43.4, Problem 2CC
MAKE CONNECTIONS There are vast stores of organic matter in the soils of northern coniferous forests and tundra around the world. Suggest an explanation for why scientists who study global warming are closely monitoring these stores (see Figures 7.2 and 42.13).
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MAKE CONNECTIONS Review the discussion of feedback regulation in Concept 1.1. Could effects of globalwarming on peatlands alter CO2 concentrations in waysthat result in negative or positive feedback? Explain.
WRITE ABOUT A THEME: Energy and MatterDecomposition typically occurs quickly in moist tropicalforests. However, waterlogging in the soil of some moisttropical forests results over time in a buildup of organicmatter called “peat.” In a short essay (100–150 words), discussthe relationship of net primary production, net ecosystemproduction, and decomposition for such an ecosystem. AreNPP and NEP likely to be positive? What do you think wouldhappen to NEP if a landowner drained the water from atropical peatland, exposing the organic matter to air?
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Chapter 43 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 43.1 - Prob. 1CCCh. 43.1 - Prob. 2CCCh. 43.1 - WHAT IF? Imagine two populations of a fish...Ch. 43.2 - How does the reduced genetic diversity of small...Ch. 43.2 - Prob. 2CCCh. 43.2 - WHAT IF? In 2005, at least ten grizzly bears in...Ch. 43.3 - Prob. 1CCCh. 43.3 - Prob. 2CCCh. 43.3 - Prob. 3CCCh. 43.4 - How can the addition of excess mineral nutrients...
Ch. 43.4 - MAKE CONNECTIONS There are vast stores of organic...Ch. 43.5 - Prob. 1CCCh. 43.5 - Prob. 2CCCh. 43.6 - Prob. 1CCCh. 43.6 - Prob. 2CCCh. 43.6 - WHAT IF? Suppose a new fishery is discovered, and...Ch. 43 - One characteristic that distinguishes a population...Ch. 43 - Prob. 2TYUCh. 43 - Prob. 3TYUCh. 43 - Prob. 4TYUCh. 43 - Prob. 5TYUCh. 43 - Prob. 6TYUCh. 43 - DRAW IT (a) Estimate the average CO2 concentration...Ch. 43 - Prob. 8TYUCh. 43 - FOCUS ON EVOLUTION The fossil record indicates...Ch. 43 - Prob. 10TYUCh. 43 - SYNTHESIZE YOUR KNOWLEDGE Big cats, such as the...
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- MAKE CONNECTIONS Refer to the discussion of oceanacidification in Concept 3.3. Ocean acidification andchanges in the distribution of C3 and C4 plants may seemto be two very different problems, but what do theyhave in common? Explain.arrow_forwardLocal conditions, such as heavy rainfall or the removal of plants, may limit the amount of nitrogen, phosphorus, or calcium available to a particular terrestrial ecosystem, but the amount of carbon available to the ecosystem is seldom a problem. Why?arrow_forwardplease draw! 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_forward
- Given the information in the graph what conclusion can you make with respect to the relationship between climate change (increasing global temperatures) and the amount of carbon dioxide released into the atmosphere by land ecosystems? Explain, using information from the graph to support your explanation.arrow_forwardIf decomposers usually grow faster and decompose material more quicklyin warmer ecosystems, why is decomposition in hot deserts relatively slow?arrow_forwardDescribe the flow of energy through the biotic community and include the forms into which solar radiation is converted. How does this flow differ from the manner in which matter is moved through the ecosystem?arrow_forward
- Create a model which accurately, in detail, depicts the potential pathways of carbon and energy in an ecosystem with the following organisms: grass, mice, snakes, and hawks (don’t forget your decomposers as well).Make sure to incorporate multiple pathways and clearly illustrate how carbon and energy flow in this ecosystem.arrow_forwardATMOSPHERIC N, B. REDUCED NITROGEN OXIDIZED NITROGEN (NH,; NH,") (NO,; NO, The "nitrogen triangle" is shown. In which side of the triangle is N20, a greenhouse gas, produced? A) O side A B) O side B C) O side C D) O none of the abovearrow_forwardThe concentration of carbon dioxide has been rising in the Earth’s atmosphere at an unprecedented rate. Explain why this increase is happening in terms of chemical reactions and emissions sources. Identify two ecosystem consequences of this enrichment. Describe some ways the problem can be addressed.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_forwardGiven the information in the graph, what conclusion can you make concerning the relationship between climate change (increasing global temperatures) and the amount of carbon dioxide released into the atmosphere by land ecosystems? Explain, using information from the graph to support your explanation.arrow_forwardQ5 [Create a box-and-arrow model for the Lake Michigan/MSU Red Cedar River ecosystem that illustrates how a carbon atom from phytoplankton in Lake Michigan could become part of a willow tree along the bank of the Red Cedar River. Make sure to label the arrows with carbon processes. You should include alewife, Chinook salmon, zooplankton, phytoplankton, aquatic decomposers, and willow trees in your boxes and the appropriate carbon cycle processes on the arrows.arrow_forward
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