Ecological hierarchy comprises which of the following sequences?

  • A
    Population $\rightarrow$ Species $\rightarrow$ Community $\rightarrow$ Ecosystem $\rightarrow$ Biosphere
  • B
    Species $\rightarrow$ Population $\rightarrow$ Community $\rightarrow$ Ecosystem $\rightarrow$ Biosphere
  • C
    Species $\rightarrow$ Population $\rightarrow$ Biosphere $\rightarrow$ Community $\rightarrow$ Ecosystem
  • D
    Species $\rightarrow$ Population $\rightarrow$ Biosphere $\rightarrow$ Ecosystem $\rightarrow$ Community

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