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Refer to the Figure

Question 180

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Refer to the figure. Refer to the figure.   Due to rising atmospheric CO<sub>2</sub> levels, ocean temperatures are increasing and CO<sub>2</sub> dissolving in oceans is causing increased acidification.Omnivores (crustaceans and snails)  in an estuarine food web in Sweden feed on herbivores, macroalgae, and microalgae.Herbivores feed on microalgae, which compete with macroalgae for light.Christian Alsterberg and colleagues analyzed how these three groups reacted to ocean warming and acidification, with and without the presence of omnivores.According to the graphs, which group(s)  show(s)  a significant increase when CO<sub>2</sub> and temperature are increased and omnivores are removed? A)  Benthic microalgae only B)  Macroalgae only C)  Herbivores only D)  Benthic microalgae and macroalgae E)  Macroalgae and herbivores Due to rising atmospheric CO2 levels, ocean temperatures are increasing and CO2 dissolving in oceans is causing increased acidification.Omnivores (crustaceans and snails) in an estuarine food web in Sweden feed on herbivores, macroalgae, and microalgae.Herbivores feed on microalgae, which compete with macroalgae for light.Christian Alsterberg and colleagues analyzed how these three groups reacted to ocean warming and acidification, with and without the presence of omnivores.According to the graphs, which group(s) show(s) a significant increase when CO2 and temperature are increased and omnivores are removed?


A) Benthic microalgae only
B) Macroalgae only
C) Herbivores only
D) Benthic microalgae and macroalgae
E) Macroalgae and herbivores

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