Refer to the Figure

Multiple Choice

Refer to the figure. 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