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28 February, 18:20

What is upwelling?

A. The mixing of two biomes

B. The productivity of an ecosystem

C. When infertile species reproduce

O

D. Water moving up from the benthie zone

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Answers (2)
  1. 28 February, 19:51
    0
    Option D

    Explanation:

    Upwelling is when deeper water rises on the top of the surface bringing rich nutrients from the ocean/sea bed.
  2. 28 February, 21:16
    0
    Upwelling refers to option D
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