The flow of material and energy in an ecosystem is
A
linear only
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B
cyclic only
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C
cyclic and linear(trophic levels) respectively
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D
linear and cyclic respectively
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Solution
The correct option is C cyclic and linear(trophic levels) respectively The nutrient or biogeochemical cycles are more or less circular paths of the chemical elements passing back and forth between organisms and the environment whereas energy flow is always unidirectional which means the path is linear. Energy flow is unidirectional because energy flows from one trophic level to next higher one