smithsa10630
16.03.2020 •
Biology
The main products of technological development are inventions, processes and systems. The main products of scientific investigation are
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Ответ:
Because photosynthesis is a source of oxygen, it seems intuitive that photosynthesis evolved first: once enough O2 was in the air, then respiration would be able to arise in the newly oxygen-enriched atmosphere. However, some biologists have argued since the 1970's that respiration in fact evolved first.