Campbell Biology in Focus
Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 41.2, Problem 4CC

MAKE CONNECTIONS Rising atmospheric CO2 levels lead to ocean acidification (see Figure 2.24) and global warming, both of which can reduce krill abundance. Predict how a drop in krill abundance might affect other organisms in the food web shown in Figure 41.14. Which organisms are particularly at risk? Explain.

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Consider a trophiccascade with 4 levels:  1) predatory fish that consume planktivorous fish, 2) planktivorous fish that consume zooplankton,3)  herbivorous zoplankton that consume phytoplankton, and 4) phytoplankton. True or False: A reduction in predatory fish will increase the level of phytoplankton.  True  False
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