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Why is it logical to believe that the earliest form of life are the heterotrophs?
Wiki User
∙ 13y ago
It's not. Autotrophs (plants), were the first organisms on Earth. They photsynthesize their food, thus creating an ample food supply for a first degree heterotroph. According to the food-energy pyramid, of the 100% energy contained in the autotrophs, only 10% is passed on to the first degree heterotrophs. Of that, only 10% is passed on, meaning that of the original sum, only 1% of energy is passed on to the second-degree heterotrophs. Therefore, there must be enough autotrophs to support any population of heterotrophs. It's illogical then to reason that heterotrophs were the first organisms. They would have had no food. Any type of food for a heterotrophs is either an autotroph or a lower degree heterotroph that eats an autotroph.
Wiki User
∙ 13y ago
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