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Which of the following gases provided the carbon skeleton of living things during the origin of life?
Answer: Ammonia
Answer: Ammonia
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Answer: All of the above
Answer: life can arise from non-living things only.
Answer: they share a common ancestor
Answer: the young ones are protected inside the mother’s body and are looked after they are born leading to more chances of survival
Answer: 3000-4000 million years
Answer: 3300-3500
Answer: Natural selection can alter frequency of an inherited trait.
Answer: Lipids
Answer: Ramapithecus → Homo habilis → Homo erectus → Homo sapiens
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