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1 April, 20:20

The four main systems of the Earth are

A. geosphere, atmosphere, hydrosphere, and biosphere.

B. geology, meteorology, oceanography, and chemistry.

C. geosphere, atmosphere, hydrosphere, and aerosphere.

D. technology, biology, chemistry, and physical properties.

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Answers (2)
  1. 1 April, 20:37
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    A. geosphere, atmosphere, hydrosphere, and biosphere.
  2. 1 April, 20:42
    0
    A. geosphere, atmosphere, hydrosphere, and biosphere.
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