James Lovelock, developer of the Gaia theory, said that the presence of life on another planet could be inferred from the composition of its atmosphere.

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James Lovelock proposed that the presence of life on another planet could be inferred from the composition of its atmosphere, as living organisms have a significant impact on the chemical composition of the atmosphere. For example, on Earth, the presence of oxygen in the atmosphere is a strong indication of the presence of photosynthetic life.

James Lovelock, Developer of the Gaia Theory, Said That the Presence