Answer:a general vote by the electorate on a single political question which has been referred to them for a direct decision.
Explanation:
A lake community with four trophic levels suddenly suffers from algal blooms. Using the strategy of biomanipulation, an ecologist may propose removing zoonplankton.
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Answer:
The land must produce enough food to feed an enormous population.
A fold shaped like an elongate trough is an<u> A. Anticline</u>.
<h3>What is an elongate trough?</h3>
An elongate trough forms the deepest part of a surface undulation with a subparallel trend to an adjacent trough.
An anticline is an arch-like shape with its oldest beds at its core, curved upward. An anticline is an inverse of a syncline, which is curved downward.
A. Anticline
B. Basin
C. Dome
D. Syncline
Thus, a fold shaped like an elongate trough is an<u> A. Anticline</u>.
Learn more about an anticline at brainly.com/question/13147167
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