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4 January, 19:27

What do all ecosystems have?

A. biotic p21 only

B. abiotic p21 only

C. producers only

D. biotic and abiotic p21

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Answers (1)
  1. 4 January, 23:07
    0
    I pretty sure that it include both biotic and abiotic. But "C" is wrong. Now your answers are between "A, B and C"
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