> The new, higher oxygen levels in the ocean reached a
> threshold favourable for animals to evolve.
Nobody has explained how the volatile and extremely unstable element Oxygen was harnessed by life to do work. Either the molecules were intelligent, or they had intelligence guiding them.
Else the same chance processes that made oxygen work for life in one instance would destroy it in the next.
So, because science doesn’t have an answer for your question, then intelligent design must be true? You’re conclusion is worthless and have zero to add to the discussion. Argument from ignorance. Thanks for playing.
Actually, one of the first mass extinctions was caused by oxygen. Oxygen is lethal to many microbes.