Which statement best describes how plants and animals maintain the flow of matter through an ecosystem?
A) Plants produce the sugar molecules and only animals can break down sugar molecules.
B) Plants are needed to decompose organic matter which is added to the ecosystem by animals.
C) Plants produce oxygen needed by animals and animals produce carbon dioxide needed by plants.
D) Plants are needed to convert carbon into carbon dioxide, which is required by animals to produce sugar molecules.
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Which statement best describes how plants and animals maintain the flow of matter through an ecosyst...
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