You will hear a recording. Select the paragraph that best relates to the recording.

(1) Life on Earth is the result of complex interdependent events of nature and some of these events are the result of human intervention.

(2) The circulation of the atmosphere, threatened by global warming and pollution, protects biosphere and makes life on Earth possible.

(3) The circulation of the atmosphere is the single most important factor in keeping biosphere alive, and it is constantly threatened by harmful human activity.

(4) If the protective atmosphere around the earth is too damaged by human activity, all life on Earth will cease.

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