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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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 As noted in Figure 52.15, theaddition of nutrients to a lake can cause an algal bloom.When these algae die, complex molecules in their bodiesare broken down by decomposers using aerobic respiration. Explain why this would reduce the lake’s oxygenlevels (see Concept 9.1)arrow_forwardIf decomposers usually grow faster and decompose material more quicklyin warmer ecosystems, why is decomposition in hot deserts relatively slow?arrow_forwardWith schematic outline briefly explain carbon and oxygen cycle in hydrospherearrow_forward
- 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?arrow_forwardModel/diagram the sources and sinks of carbon in the global ecosystem. You will need to create TWO models/diagrams of the sources and sinks of carbon. In the first model diagram the sources and sinks of carbon in a natural, pre-industrial landscape. In the second model, diagram the sources and sinks of carbon in a landscape altered by human activity and industry. Finally, write a few short sentences on what you would expect the atmospheric levels of CO2 to be in each model and why they would or would not be similar.arrow_forwardMAKE 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.arrow_forward
- Thinking Analytically Is phytoplankton productivity highest at the ocean surface? What advantage would optimum productivity at a depth below the surface provide to phytoplankton?arrow_forward___ can have a confounding effect on climate change models, because as the Earth warms, we may see more of these form - thus reflecting more solar energy.arrow_forwardScientists study bubbles trapped in ancient glacial ice todetermine how concentrations of nitrogen and carbondioxide gas have changed over time. However, bubblesin glacial ice cannot provide information about changesin phosphorus. Explain why air samples are not usefulfor this purpose, and propose an alternative method tostudy how the amount of phosphorus in a region haschanged over time.arrow_forward
- MAKE CONNECTIONS In addition to causing climatechange, rising concentrations of CO2 are contributing toocean acidification (see Figure 3.12). Explain how oceanacidification can affect individual organisms, and howthat, in turn, can cause dramatic changes in ecologicalcommunities.arrow_forwardPredict possible consequences if carbon emissions from fossil fuels continue to rise.arrow_forwardECOLOGY HELP ECOLOGY HELP According to these maps, as temperature and precipitation increases tremendously in the Midwestern United States, what will be the best photosynthetic pathway for crops, C4 or CAM?arrow_forward
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