1. The main explanation for the lack of a continuing abiotic origin of life on Earth today is that (A) there are no molten surfaces on which weak solutions of organic molecules would polymerize. (B) all habitable places are already filled. (C) our oxidizing atmosphere is not conducive to the spontaneous formation of complex molecules. (D) there is not sufficient lightning to provide an energy source. (E) much less visible light is reaching Earth to serve as an energy source.