A lake community with four trophic levels suddenly suffers from algal blooms. Using the strategy of biomanipulation, an ecologist may propose removing zoonplankton.
Hope I helped.
The best and most correct answer among the choices provided by your question is the fourth choice.
The geography of the Mayan civilization different from the geography of Mesopotamian civilization because t<span>he Mayan civilization was not built around a major river.</span>
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It's really hard to explain in words.
See the attached diagram.
