The first life on Earth was ...

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(B) According to the Oparin-Haldane hypothesis and current biological consensus,the first life forms on Earth were anaerobic chemoheterotrophs. These

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Chemoheterotrophs

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(B) According to the Oparin-Haldane hypothesis and current biological consensus,the first life forms on Earth were anaerobic chemoheterotrophs. These organisms obtained energy by consuming organic molecules present in the 'primordial soup' of the early ocean,as they lacked the complex machinery for photosynthesis or chemosynthesis at that stage.

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