How hot would Earth be if it never had life?
Life, plant life in particular, causes earth to have oxygen, and oxygen cools the planet. How hot would earth be if it never had life on it to begin with? Just a range.
Hidalgo County Texas
Howdy. It is an interesting question, but one that is out of the scope of Extension Experts. A quick Internet search pretty much confirms that without plants the earth would have no means to clean the air, filter carbon and replenish oxygen. They don't get specific tempratures but here's a very recent article from Princeton researchers: