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1 May, 03:58

The four main systems of the Earth are

a. geology, meteorology, oceanography, and chemistry.

b. geosphere, atmosphere, hydrosphere, and biosphere.

c. aromatherapy, biology, chemistry, and physical properties.

d. geosphere, atmosphere, hydrosphere, and aerosphere.

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Answers (2)
  1. 1 May, 07:27
    0
    geosphere, atmosphere, hydrosphere and biosphere are the four main systems of the earth
  2. 1 May, 07:42
    0
    B. geosphere, atmosphere, hydrosphere, and biosphere
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