According to some “international team of scientists,” evolution of complex life was delayed by up to 2 billion years. See, the problem was a lack of molybdenum which allows bacteria to fix nitrogen. Without this process, the oxygenation of the seas was delayed for a long time.
OK, but from an evolution perspective, why should this have delayed anything? Why did life not find a way to adapt and evolve anyway? Alas, this question is not answered. It’s a good indicator, however, that critters (eukaryotes) were designed to use oxygen.