Which of the Following Is Necessary to Maintain a Balanced

question 7

Multiple Choice

Which of the following is necessary to maintain a balanced (stable) ecosystem?

• A) Matter (i.e., elements) has to cycle.
• B) There must be an outside energy source.
• C) Various populations of producers and consumers must be proportional.
• D) Energy must be allowed to flow through the ecosystem.
• E) All of the answer choices describe necessary factors for maintaining a balanced ecosystem.

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