Hot answers tagged


This all comes down to a single issue. Define plate tectonics. There are several ways it can be defined which is why estimates of when it started vary by more than half the age of the planet. At the broadest definition plate tectonics predates liquid water by a decent margin, by the narrowest it may not even predate multicellular life. Like most process ...

Only top voted, non community-wiki answers of a minimum length are eligible